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Finding the Fourth Proportional to 103,630.06, 155,447.72 and 77,500.67

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Solution

The fourth proportional to 103,630.06, 155,447.72 and 77,500.67 is: 116,252.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,630.06 : 155,447.72 = 77,500.67 : x
  2. Step 2: Convert to fraction form
    103,630.06/155,447.72 = 77,500.67/x
  3. Step 3: Cross multiply
    103,630.06x = 155,447.72 × 77,500.67
  4. Step 4: Simplify right side
    103,630.06x = 12,047,302,449.97
  5. Step 5: Solve for x
    x = 12,047,302,449.97/103,630.06
  6. Step 6: Final answer
    x = 116,252.97

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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.