Home / 119,854.15-165,402.23-66,142.64

Finding the Fourth Proportional to 119,854.15, 165,402.23 and 66,142.64

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Solution

The fourth proportional to 119,854.15, 165,402.23 and 66,142.64 is: 91,278.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,854.15 : 165,402.23 = 66,142.64 : x
  2. Step 2: Convert to fraction form
    119,854.15/165,402.23 = 66,142.64/x
  3. Step 3: Cross multiply
    119,854.15x = 165,402.23 × 66,142.64
  4. Step 4: Simplify right side
    119,854.15x = 10,940,140,236.88
  5. Step 5: Solve for x
    x = 10,940,140,236.88/119,854.15
  6. Step 6: Final answer
    x = 91,278.78

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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.