Home / 120,147.29-165,791.57-66,424.95

Finding the Fourth Proportional to 120,147.29, 165,791.57 and 66,424.95

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Solution

The fourth proportional to 120,147.29, 165,791.57 and 66,424.95 is: 91,659.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,147.29 : 165,791.57 = 66,424.95 : x
  2. Step 2: Convert to fraction form
    120,147.29/165,791.57 = 66,424.95/x
  3. Step 3: Cross multiply
    120,147.29x = 165,791.57 × 66,424.95
  4. Step 4: Simplify right side
    120,147.29x = 11,012,696,747.67
  5. Step 5: Solve for x
    x = 11,012,696,747.67/120,147.29
  6. Step 6: Final answer
    x = 91,659.97

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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.