Home / 125,198.88-172,791-71,471.76

Finding the Fourth Proportional to 125,198.88, 172,791 and 71,471.76

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Solution

The fourth proportional to 125,198.88, 172,791 and 71,471.76 is: 98,640.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,198.88 : 172,791 = 71,471.76 : x
  2. Step 2: Convert to fraction form
    125,198.88/172,791 = 71,471.76/x
  3. Step 3: Cross multiply
    125,198.88x = 172,791 × 71,471.76
  4. Step 4: Simplify right side
    125,198.88x = 12,349,676,882.16
  5. Step 5: Solve for x
    x = 12,349,676,882.16/125,198.88
  6. Step 6: Final answer
    x = 98,640.47

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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.