Home / 165,143.20-227,889.12-89,691.52

Finding the Fourth Proportional to 165,143.20, 227,889.12 and 89,691.52

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Solution

The fourth proportional to 165,143.20, 227,889.12 and 89,691.52 is: 123,769.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,143.20 : 227,889.12 = 89,691.52 : x
  2. Step 2: Convert to fraction form
    165,143.20/227,889.12 = 89,691.52/x
  3. Step 3: Cross multiply
    165,143.20x = 227,889.12 × 89,691.52
  4. Step 4: Simplify right side
    165,143.20x = 20,439,721,564.26
  5. Step 5: Solve for x
    x = 20,439,721,564.26/165,143.20
  6. Step 6: Final answer
    x = 123,769.68

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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.