Home / 129,463.06-178,714.30-87,046.20

Finding the Fourth Proportional to 129,463.06, 178,714.30 and 87,046.20

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Solution

The fourth proportional to 129,463.06, 178,714.30 and 87,046.20 is: 120,160.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,463.06 : 178,714.30 = 87,046.20 : x
  2. Step 2: Convert to fraction form
    129,463.06/178,714.30 = 87,046.20/x
  3. Step 3: Cross multiply
    129,463.06x = 178,714.30 × 87,046.20
  4. Step 4: Simplify right side
    129,463.06x = 15,556,400,700.66
  5. Step 5: Solve for x
    x = 15,556,400,700.66/129,463.06
  6. Step 6: Final answer
    x = 120,160.92

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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.