Home / 136,123.34-187,822.55-79,523.78

Finding the Fourth Proportional to 136,123.34, 187,822.55 and 79,523.78

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Solution

The fourth proportional to 136,123.34, 187,822.55 and 79,523.78 is: 109,726.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,123.34 : 187,822.55 = 79,523.78 : x
  2. Step 2: Convert to fraction form
    136,123.34/187,822.55 = 79,523.78/x
  3. Step 3: Cross multiply
    136,123.34x = 187,822.55 × 79,523.78
  4. Step 4: Simplify right side
    136,123.34x = 14,936,358,747.62
  5. Step 5: Solve for x
    x = 14,936,358,747.62/136,123.34
  6. Step 6: Final answer
    x = 109,726.65

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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.