Home / 136,142.97-187,849.56-79,543.41

Finding the Fourth Proportional to 136,142.97, 187,849.56 and 79,543.41

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Solution

The fourth proportional to 136,142.97, 187,849.56 and 79,543.41 is: 109,753.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,142.97 : 187,849.56 = 79,543.41 : x
  2. Step 2: Convert to fraction form
    136,142.97/187,849.56 = 79,543.41/x
  3. Step 3: Cross multiply
    136,142.97x = 187,849.56 × 79,543.41
  4. Step 4: Simplify right side
    136,142.97x = 14,942,194,569.40
  5. Step 5: Solve for x
    x = 14,942,194,569.40/136,142.97
  6. Step 6: Final answer
    x = 109,753.70

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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.