Home / 136,836.70-205,225.74-79,872.64

Finding the Fourth Proportional to 136,836.70, 205,225.74 and 79,872.64

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Solution

The fourth proportional to 136,836.70, 205,225.74 and 79,872.64 is: 119,791.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,836.70 : 205,225.74 = 79,872.64 : x
  2. Step 2: Convert to fraction form
    136,836.70/205,225.74 = 79,872.64/x
  3. Step 3: Cross multiply
    136,836.70x = 205,225.74 × 79,872.64
  4. Step 4: Simplify right side
    136,836.70x = 16,391,921,649.75
  5. Step 5: Solve for x
    x = 16,391,921,649.75/136,836.70
  6. Step 6: Final answer
    x = 119,791.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.