Home / 136,780.40-188,842.25-88,407.61

Finding the Fourth Proportional to 136,780.40, 188,842.25 and 88,407.61

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Solution

The fourth proportional to 136,780.40, 188,842.25 and 88,407.61 is: 122,057.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,780.40 : 188,842.25 = 88,407.61 : x
  2. Step 2: Convert to fraction form
    136,780.40/188,842.25 = 88,407.61/x
  3. Step 3: Cross multiply
    136,780.40x = 188,842.25 × 88,407.61
  4. Step 4: Simplify right side
    136,780.40x = 16,695,091,989.52
  5. Step 5: Solve for x
    x = 16,695,091,989.52/136,780.40
  6. Step 6: Final answer
    x = 122,057.63

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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.