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Finding the Fourth Proportional to 157,700.28, 217,593.90 and 90,619.32

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Solution

The fourth proportional to 157,700.28, 217,593.90 and 90,619.32 is: 125,035.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,700.28 : 217,593.90 = 90,619.32 : x
  2. Step 2: Convert to fraction form
    157,700.28/217,593.90 = 90,619.32/x
  3. Step 3: Cross multiply
    157,700.28x = 217,593.90 × 90,619.32
  4. Step 4: Simplify right side
    157,700.28x = 19,718,211,254.15
  5. Step 5: Solve for x
    x = 19,718,211,254.15/157,700.28
  6. Step 6: Final answer
    x = 125,035.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.