Home / 136,222.20-187,983.70-78,863.95

Finding the Fourth Proportional to 136,222.20, 187,983.70 and 78,863.95

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Solution

The fourth proportional to 136,222.20, 187,983.70 and 78,863.95 is: 108,830.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,222.20 : 187,983.70 = 78,863.95 : x
  2. Step 2: Convert to fraction form
    136,222.20/187,983.70 = 78,863.95/x
  3. Step 3: Cross multiply
    136,222.20x = 187,983.70 × 78,863.95
  4. Step 4: Simplify right side
    136,222.20x = 14,825,137,117.62
  5. Step 5: Solve for x
    x = 14,825,137,117.62/136,222.20
  6. Step 6: Final answer
    x = 108,830.55

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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.