Home / 131,531.88-181,471.17-80,491.35

Finding the Fourth Proportional to 131,531.88, 181,471.17 and 80,491.35

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Solution

The fourth proportional to 131,531.88, 181,471.17 and 80,491.35 is: 111,051.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,531.88 : 181,471.17 = 80,491.35 : x
  2. Step 2: Convert to fraction form
    131,531.88/181,471.17 = 80,491.35/x
  3. Step 3: Cross multiply
    131,531.88x = 181,471.17 × 80,491.35
  4. Step 4: Simplify right side
    131,531.88x = 14,606,859,459.38
  5. Step 5: Solve for x
    x = 14,606,859,459.38/131,531.88
  6. Step 6: Final answer
    x = 111,051.86

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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.