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Finding the Fourth Proportional to 157,751.92, 217,716.74 and 89,785.42

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Solution

The fourth proportional to 157,751.92, 217,716.74 and 89,785.42 is: 123,914.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,751.92 : 217,716.74 = 89,785.42 : x
  2. Step 2: Convert to fraction form
    157,751.92/217,716.74 = 89,785.42/x
  3. Step 3: Cross multiply
    157,751.92x = 217,716.74 × 89,785.42
  4. Step 4: Simplify right side
    157,751.92x = 19,547,788,941.93
  5. Step 5: Solve for x
    x = 19,547,788,941.93/157,751.92
  6. Step 6: Final answer
    x = 123,914.75

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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.