Home / 129,043.82-178,167.24-98,775.20

Finding the Fourth Proportional to 129,043.82, 178,167.24 and 98,775.20

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Solution

The fourth proportional to 129,043.82, 178,167.24 and 98,775.20 is: 136,376.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,043.82 : 178,167.24 = 98,775.20 : x
  2. Step 2: Convert to fraction form
    129,043.82/178,167.24 = 98,775.20/x
  3. Step 3: Cross multiply
    129,043.82x = 178,167.24 × 98,775.20
  4. Step 4: Simplify right side
    129,043.82x = 17,598,503,873.61
  5. Step 5: Solve for x
    x = 17,598,503,873.61/129,043.82
  6. Step 6: Final answer
    x = 136,376.19

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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.