Home / 131,800.91-181,886.11-71,371.55

Finding the Fourth Proportional to 131,800.91, 181,886.11 and 71,371.55

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Solution

The fourth proportional to 131,800.91, 181,886.11 and 71,371.55 is: 98,493.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,800.91 : 181,886.11 = 71,371.55 : x
  2. Step 2: Convert to fraction form
    131,800.91/181,886.11 = 71,371.55/x
  3. Step 3: Cross multiply
    131,800.91x = 181,886.11 × 71,371.55
  4. Step 4: Simplify right side
    131,800.91x = 12,981,493,870.46
  5. Step 5: Solve for x
    x = 12,981,493,870.46/131,800.91
  6. Step 6: Final answer
    x = 98,493.21

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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.