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Finding the Fourth Proportional to 157,659.80, 217,575.30 and 89,686.56

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Solution

The fourth proportional to 157,659.80, 217,575.30 and 89,686.56 is: 123,770.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,659.80 : 217,575.30 = 89,686.56 : x
  2. Step 2: Convert to fraction form
    157,659.80/217,575.30 = 89,686.56/x
  3. Step 3: Cross multiply
    157,659.80x = 217,575.30 × 89,686.56
  4. Step 4: Simplify right side
    157,659.80x = 19,513,580,197.97
  5. Step 5: Solve for x
    x = 19,513,580,197.97/157,659.80
  6. Step 6: Final answer
    x = 123,770.17

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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.