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Finding the Fourth Proportional to 125,229.92, 172,835.02 and 77,498.68

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Solution

The fourth proportional to 125,229.92, 172,835.02 and 77,498.68 is: 106,959.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,229.92 : 172,835.02 = 77,498.68 : x
  2. Step 2: Convert to fraction form
    125,229.92/172,835.02 = 77,498.68/x
  3. Step 3: Cross multiply
    125,229.92x = 172,835.02 × 77,498.68
  4. Step 4: Simplify right side
    125,229.92x = 13,394,485,907.77
  5. Step 5: Solve for x
    x = 13,394,485,907.77/125,229.92
  6. Step 6: Final answer
    x = 106,959.15

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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.