Home / 138,579.23-207,934.46-79,464.89

Finding the Fourth Proportional to 138,579.23, 207,934.46 and 79,464.89

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Solution

The fourth proportional to 138,579.23, 207,934.46 and 79,464.89 is: 119,234.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,579.23 : 207,934.46 = 79,464.89 : x
  2. Step 2: Convert to fraction form
    138,579.23/207,934.46 = 79,464.89/x
  3. Step 3: Cross multiply
    138,579.23x = 207,934.46 × 79,464.89
  4. Step 4: Simplify right side
    138,579.23x = 16,523,487,554.11
  5. Step 5: Solve for x
    x = 16,523,487,554.11/138,579.23
  6. Step 6: Final answer
    x = 119,234.95

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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.