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Finding the Fourth Proportional to 125,079.86, 172,610.49 and 67,719.81

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Solution

The fourth proportional to 125,079.86, 172,610.49 and 67,719.81 is: 93,453.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,079.86 : 172,610.49 = 67,719.81 : x
  2. Step 2: Convert to fraction form
    125,079.86/172,610.49 = 67,719.81/x
  3. Step 3: Cross multiply
    125,079.86x = 172,610.49 × 67,719.81
  4. Step 4: Simplify right side
    125,079.86x = 11,689,150,488.05
  5. Step 5: Solve for x
    x = 11,689,150,488.05/125,079.86
  6. Step 6: Final answer
    x = 93,453.50

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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.