Home / 128,932.80-192,902.40-79,002.24

Finding the Fourth Proportional to 128,932.80, 192,902.40 and 79,002.24

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Solution

The fourth proportional to 128,932.80, 192,902.40 and 79,002.24 is: 118,198.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,932.80 : 192,902.40 = 79,002.24 : x
  2. Step 2: Convert to fraction form
    128,932.80/192,902.40 = 79,002.24/x
  3. Step 3: Cross multiply
    128,932.80x = 192,902.40 × 79,002.24
  4. Step 4: Simplify right side
    128,932.80x = 15,239,721,701.38
  5. Step 5: Solve for x
    x = 15,239,721,701.38/128,932.80
  6. Step 6: Final answer
    x = 118,198.95

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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.