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Finding the Fourth Proportional to 103,485.70, 155,088.16 and 47,256.10

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Solution

The fourth proportional to 103,485.70, 155,088.16 and 47,256.10 is: 70,820.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,485.70 : 155,088.16 = 47,256.10 : x
  2. Step 2: Convert to fraction form
    103,485.70/155,088.16 = 47,256.10/x
  3. Step 3: Cross multiply
    103,485.70x = 155,088.16 × 47,256.10
  4. Step 4: Simplify right side
    103,485.70x = 7,328,861,597.78
  5. Step 5: Solve for x
    x = 7,328,861,597.78/103,485.70
  6. Step 6: Final answer
    x = 70,820.04

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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.