Home / 121,540.20-182,310.30-115,708.20

Finding the Fourth Proportional to 121,540.20, 182,310.30 and 115,708.20

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Solution

The fourth proportional to 121,540.20, 182,310.30 and 115,708.20 is: 173,562.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,540.20 : 182,310.30 = 115,708.20 : x
  2. Step 2: Convert to fraction form
    121,540.20/182,310.30 = 115,708.20/x
  3. Step 3: Cross multiply
    121,540.20x = 182,310.30 × 115,708.20
  4. Step 4: Simplify right side
    121,540.20x = 21,094,796,654.46
  5. Step 5: Solve for x
    x = 21,094,796,654.46/121,540.20
  6. Step 6: Final answer
    x = 173,562.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.