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Finding the Fourth Proportional to 157,484.96, 217,330.28 and 85,866.17

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Solution

The fourth proportional to 157,484.96, 217,330.28 and 85,866.17 is: 118,495.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,484.96 : 217,330.28 = 85,866.17 : x
  2. Step 2: Convert to fraction form
    157,484.96/217,330.28 = 85,866.17/x
  3. Step 3: Cross multiply
    157,484.96x = 217,330.28 × 85,866.17
  4. Step 4: Simplify right side
    157,484.96x = 18,661,317,252.65
  5. Step 5: Solve for x
    x = 18,661,317,252.65/157,484.96
  6. Step 6: Final answer
    x = 118,495.87

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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.