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Finding the Fourth Proportional to 125,067.40, 172,593 and 68,478.76

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Solution

The fourth proportional to 125,067.40, 172,593 and 68,478.76 is: 94,500.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,067.40 : 172,593 = 68,478.76 : x
  2. Step 2: Convert to fraction form
    125,067.40/172,593 = 68,478.76/x
  3. Step 3: Cross multiply
    125,067.40x = 172,593 × 68,478.76
  4. Step 4: Simplify right side
    125,067.40x = 11,818,954,624.68
  5. Step 5: Solve for x
    x = 11,818,954,624.68/125,067.40
  6. Step 6: Final answer
    x = 94,500.68

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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.