Home / 125,974.45-173,838.18-78,226.78

Finding the Fourth Proportional to 125,974.45, 173,838.18 and 78,226.78

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Solution

The fourth proportional to 125,974.45, 173,838.18 and 78,226.78 is: 107,948.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,974.45 : 173,838.18 = 78,226.78 : x
  2. Step 2: Convert to fraction form
    125,974.45/173,838.18 = 78,226.78/x
  3. Step 3: Cross multiply
    125,974.45x = 173,838.18 × 78,226.78
  4. Step 4: Simplify right side
    125,974.45x = 13,598,801,062.46
  5. Step 5: Solve for x
    x = 13,598,801,062.46/125,974.45
  6. Step 6: Final answer
    x = 107,948.88

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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.