Home / 131,708.20-181,755.48-75,120.52

Finding the Fourth Proportional to 131,708.20, 181,755.48 and 75,120.52

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Solution

The fourth proportional to 131,708.20, 181,755.48 and 75,120.52 is: 103,665.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,708.20 : 181,755.48 = 75,120.52 : x
  2. Step 2: Convert to fraction form
    131,708.20/181,755.48 = 75,120.52/x
  3. Step 3: Cross multiply
    131,708.20x = 181,755.48 × 75,120.52
  4. Step 4: Simplify right side
    131,708.20x = 13,653,566,170.45
  5. Step 5: Solve for x
    x = 13,653,566,170.45/131,708.20
  6. Step 6: Final answer
    x = 103,665.27

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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.