Home / 136,197.27-187,948.80-78,828.66

Finding the Fourth Proportional to 136,197.27, 187,948.80 and 78,828.66

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Solution

The fourth proportional to 136,197.27, 187,948.80 and 78,828.66 is: 108,781.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,197.27 : 187,948.80 = 78,828.66 : x
  2. Step 2: Convert to fraction form
    136,197.27/187,948.80 = 78,828.66/x
  3. Step 3: Cross multiply
    136,197.27x = 187,948.80 × 78,828.66
  4. Step 4: Simplify right side
    136,197.27x = 14,815,752,052.61
  5. Step 5: Solve for x
    x = 14,815,752,052.61/136,197.27
  6. Step 6: Final answer
    x = 108,781.56

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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.