Home / 119,854.18-165,402.08-66,143.28

Finding the Fourth Proportional to 119,854.18, 165,402.08 and 66,143.28

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Solution

The fourth proportional to 119,854.18, 165,402.08 and 66,143.28 is: 91,279.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,854.18 : 165,402.08 = 66,143.28 : x
  2. Step 2: Convert to fraction form
    119,854.18/165,402.08 = 66,143.28/x
  3. Step 3: Cross multiply
    119,854.18x = 165,402.08 × 66,143.28
  4. Step 4: Simplify right side
    119,854.18x = 10,940,236,090.02
  5. Step 5: Solve for x
    x = 10,940,236,090.02/119,854.18
  6. Step 6: Final answer
    x = 91,279.55

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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.