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Finding the Fourth Proportional to 119,577.68, 165,018.31 and 65,862.89

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Solution

The fourth proportional to 119,577.68, 165,018.31 and 65,862.89 is: 90,891.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,577.68 : 165,018.31 = 65,862.89 : x
  2. Step 2: Convert to fraction form
    119,577.68/165,018.31 = 65,862.89/x
  3. Step 3: Cross multiply
    119,577.68x = 165,018.31 × 65,862.89
  4. Step 4: Simplify right side
    119,577.68x = 10,868,582,799.52
  5. Step 5: Solve for x
    x = 10,868,582,799.52/119,577.68
  6. Step 6: Final answer
    x = 90,891.40

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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.