Home / 131,739.76-181,800.97-71,310.21

Finding the Fourth Proportional to 131,739.76, 181,800.97 and 71,310.21

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Solution

The fourth proportional to 131,739.76, 181,800.97 and 71,310.21 is: 98,408.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,739.76 : 181,800.97 = 71,310.21 : x
  2. Step 2: Convert to fraction form
    131,739.76/181,800.97 = 71,310.21/x
  3. Step 3: Cross multiply
    131,739.76x = 181,800.97 × 71,310.21
  4. Step 4: Simplify right side
    131,739.76x = 12,964,265,348.90
  5. Step 5: Solve for x
    x = 12,964,265,348.90/131,739.76
  6. Step 6: Final answer
    x = 98,408.14

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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.