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Finding the Fourth Proportional to 157,081.52, 216,760.20 and 89,099.12

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Solution

The fourth proportional to 157,081.52, 216,760.20 and 89,099.12 is: 122,949.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,081.52 : 216,760.20 = 89,099.12 : x
  2. Step 2: Convert to fraction form
    157,081.52/216,760.20 = 89,099.12/x
  3. Step 3: Cross multiply
    157,081.52x = 216,760.20 × 89,099.12
  4. Step 4: Simplify right side
    157,081.52x = 19,313,143,071.02
  5. Step 5: Solve for x
    x = 19,313,143,071.02/157,081.52
  6. Step 6: Final answer
    x = 122,949.81

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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.