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Finding the Fourth Proportional to 119,609.88, 165,053.04 and 65,891.76

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Solution

The fourth proportional to 119,609.88, 165,053.04 and 65,891.76 is: 90,925.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,609.88 : 165,053.04 = 65,891.76 : x
  2. Step 2: Convert to fraction form
    119,609.88/165,053.04 = 65,891.76/x
  3. Step 3: Cross multiply
    119,609.88x = 165,053.04 × 65,891.76
  4. Step 4: Simplify right side
    119,609.88x = 10,875,635,298.95
  5. Step 5: Solve for x
    x = 10,875,635,298.95/119,609.88
  6. Step 6: Final answer
    x = 90,925.89

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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.