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Finding the Fourth Proportional to 157,792.92, 217,755.96 and 86,175.05

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Solution

The fourth proportional to 157,792.92, 217,755.96 and 86,175.05 is: 118,922.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,792.92 : 217,755.96 = 86,175.05 : x
  2. Step 2: Convert to fraction form
    157,792.92/217,755.96 = 86,175.05/x
  3. Step 3: Cross multiply
    157,792.92x = 217,755.96 × 86,175.05
  4. Step 4: Simplify right side
    157,792.92x = 18,765,129,221.14
  5. Step 5: Solve for x
    x = 18,765,129,221.14/157,792.92
  6. Step 6: Final answer
    x = 118,922.51

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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.