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Finding the Fourth Proportional to 103,438,353,445.85, 155,157,530,168.78 and 103,438,353,445.85

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Solution

The fourth proportional to 103,438,353,445.85, 155,157,530,168.78 and 103,438,353,445.85 is: 155,157,530,168.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,438,353,445.85 : 155,157,530,168.78 = 103,438,353,445.85 : x
  2. Step 2: Convert to fraction form
    103,438,353,445.85/155,157,530,168.78 = 103,438,353,445.85/x
  3. Step 3: Cross multiply
    103,438,353,445.85x = 155,157,530,168.78 × 103,438,353,445.85
  4. Step 4: Simplify right side
    103,438,353,445.85x = 16,049,239,445,383,401,177,088
  5. Step 5: Solve for x
    x = 16,049,239,445,383,401,177,088/103,438,353,445.85
  6. Step 6: Final answer
    x = 155,157,530,168.78

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.