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Finding the Fourth Proportional to 157,885.52, 217,875.54 and 86,268

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Solution

The fourth proportional to 157,885.52, 217,875.54 and 86,268 is: 119,046.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,885.52 : 217,875.54 = 86,268 : x
  2. Step 2: Convert to fraction form
    157,885.52/217,875.54 = 86,268/x
  3. Step 3: Cross multiply
    157,885.52x = 217,875.54 × 86,268
  4. Step 4: Simplify right side
    157,885.52x = 18,795,687,084.72
  5. Step 5: Solve for x
    x = 18,795,687,084.72/157,885.52
  6. Step 6: Final answer
    x = 119,046.30

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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.