Home / 125,342.38-187,920.06-75,410.78

Finding the Fourth Proportional to 125,342.38, 187,920.06 and 75,410.78

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Solution

The fourth proportional to 125,342.38, 187,920.06 and 75,410.78 is: 113,059.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,342.38 : 187,920.06 = 75,410.78 : x
  2. Step 2: Convert to fraction form
    125,342.38/187,920.06 = 75,410.78/x
  3. Step 3: Cross multiply
    125,342.38x = 187,920.06 × 75,410.78
  4. Step 4: Simplify right side
    125,342.38x = 14,171,197,362.65
  5. Step 5: Solve for x
    x = 14,171,197,362.65/125,342.38
  6. Step 6: Final answer
    x = 113,059.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.