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Finding the Fourth Proportional to 120,042.92, 165,654.77 and 66,326.78

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Solution

The fourth proportional to 120,042.92, 165,654.77 and 66,326.78 is: 91,528.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,042.92 : 165,654.77 = 66,326.78 : x
  2. Step 2: Convert to fraction form
    120,042.92/165,654.77 = 66,326.78/x
  3. Step 3: Cross multiply
    120,042.92x = 165,654.77 × 66,326.78
  4. Step 4: Simplify right side
    120,042.92x = 10,987,347,485.74
  5. Step 5: Solve for x
    x = 10,987,347,485.74/120,042.92
  6. Step 6: Final answer
    x = 91,528.49

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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.