Home / 131,951.91-182,089.20-78,205.02

Finding the Fourth Proportional to 131,951.91, 182,089.20 and 78,205.02

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Solution

The fourth proportional to 131,951.91, 182,089.20 and 78,205.02 is: 107,920.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,951.91 : 182,089.20 = 78,205.02 : x
  2. Step 2: Convert to fraction form
    131,951.91/182,089.20 = 78,205.02/x
  3. Step 3: Cross multiply
    131,951.91x = 182,089.20 × 78,205.02
  4. Step 4: Simplify right side
    131,951.91x = 14,240,289,527.78
  5. Step 5: Solve for x
    x = 14,240,289,527.78/131,951.91
  6. Step 6: Final answer
    x = 107,920.30

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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.