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Finding the Fourth Proportional to 157,435.96, 217,265.08 and 85,819.56

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Solution

The fourth proportional to 157,435.96, 217,265.08 and 85,819.56 is: 118,432.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,435.96 : 217,265.08 = 85,819.56 : x
  2. Step 2: Convert to fraction form
    157,435.96/217,265.08 = 85,819.56/x
  3. Step 3: Cross multiply
    157,435.96x = 217,265.08 × 85,819.56
  4. Step 4: Simplify right side
    157,435.96x = 18,645,593,568.96
  5. Step 5: Solve for x
    x = 18,645,593,568.96/157,435.96
  6. Step 6: Final answer
    x = 118,432.88

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1.5x scale

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.