Home / 131,761.10-181,830.89-71,331.75

Finding the Fourth Proportional to 131,761.10, 181,830.89 and 71,331.75

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Solution

The fourth proportional to 131,761.10, 181,830.89 and 71,331.75 is: 98,438.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,761.10 : 181,830.89 = 71,331.75 : x
  2. Step 2: Convert to fraction form
    131,761.10/181,830.89 = 71,331.75/x
  3. Step 3: Cross multiply
    131,761.10x = 181,830.89 × 71,331.75
  4. Step 4: Simplify right side
    131,761.10x = 12,970,315,766.09
  5. Step 5: Solve for x
    x = 12,970,315,766.09/131,761.10
  6. Step 6: Final answer
    x = 98,438.12

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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.