Home / 131,819.67-181,910.22-71,388.93

Finding the Fourth Proportional to 131,819.67, 181,910.22 and 71,388.93

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Solution

The fourth proportional to 131,819.67, 181,910.22 and 71,388.93 is: 98,516.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,819.67 : 181,910.22 = 71,388.93 : x
  2. Step 2: Convert to fraction form
    131,819.67/181,910.22 = 71,388.93/x
  3. Step 3: Cross multiply
    131,819.67x = 181,910.22 × 71,388.93
  4. Step 4: Simplify right side
    131,819.67x = 12,986,375,961.86
  5. Step 5: Solve for x
    x = 12,986,375,961.86/131,819.67
  6. Step 6: Final answer
    x = 98,516.22

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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.