Home / 120,407.60-166,167.11-66,691.47

Finding the Fourth Proportional to 120,407.60, 166,167.11 and 66,691.47

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Solution

The fourth proportional to 120,407.60, 166,167.11 and 66,691.47 is: 92,036.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,407.60 : 166,167.11 = 66,691.47 : x
  2. Step 2: Convert to fraction form
    120,407.60/166,167.11 = 66,691.47/x
  3. Step 3: Cross multiply
    120,407.60x = 166,167.11 × 66,691.47
  4. Step 4: Simplify right side
    120,407.60x = 11,081,928,498.09
  5. Step 5: Solve for x
    x = 11,081,928,498.09/120,407.60
  6. Step 6: Final answer
    x = 92,036.79

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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.