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Finding the Fourth Proportional to 157,420.54, 217,240.52 and 85,800.62

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Solution

The fourth proportional to 157,420.54, 217,240.52 and 85,800.62 is: 118,404.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,420.54 : 217,240.52 = 85,800.62 : x
  2. Step 2: Convert to fraction form
    157,420.54/217,240.52 = 85,800.62/x
  3. Step 3: Cross multiply
    157,420.54x = 217,240.52 × 85,800.62
  4. Step 4: Simplify right side
    157,420.54x = 18,639,371,305.12
  5. Step 5: Solve for x
    x = 18,639,371,305.12/157,420.54
  6. Step 6: Final answer
    x = 118,404.95

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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.