Home / 157,731.52-217,672.79-86,114.56

Finding the Fourth Proportional to 157,731.52, 217,672.79 and 86,114.56

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Solution

The fourth proportional to 157,731.52, 217,672.79 and 86,114.56 is: 118,839.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,731.52 : 217,672.79 = 86,114.56 : x
  2. Step 2: Convert to fraction form
    157,731.52/217,672.79 = 86,114.56/x
  3. Step 3: Cross multiply
    157,731.52x = 217,672.79 × 86,114.56
  4. Step 4: Simplify right side
    157,731.52x = 18,744,796,534.82
  5. Step 5: Solve for x
    x = 18,744,796,534.82/157,731.52
  6. Step 6: Final answer
    x = 118,839.89

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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.