Home / 120,148.92-165,791.40-66,430.73

Finding the Fourth Proportional to 120,148.92, 165,791.40 and 66,430.73

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Solution

The fourth proportional to 120,148.92, 165,791.40 and 66,430.73 is: 91,666.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,148.92 : 165,791.40 = 66,430.73 : x
  2. Step 2: Convert to fraction form
    120,148.92/165,791.40 = 66,430.73/x
  3. Step 3: Cross multiply
    120,148.92x = 165,791.40 × 66,430.73
  4. Step 4: Simplify right side
    120,148.92x = 11,013,643,729.72
  5. Step 5: Solve for x
    x = 11,013,643,729.72/120,148.92
  6. Step 6: Final answer
    x = 91,666.61

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1.5x scale

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.