Home / 272,046.30-408,069.45-85,115.10

Finding the Fourth Proportional to 272,046.30, 408,069.45 and 85,115.10

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Solution

The fourth proportional to 272,046.30, 408,069.45 and 85,115.10 is: 127,672.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,046.30 : 408,069.45 = 85,115.10 : x
  2. Step 2: Convert to fraction form
    272,046.30/408,069.45 = 85,115.10/x
  3. Step 3: Cross multiply
    272,046.30x = 408,069.45 × 85,115.10
  4. Step 4: Simplify right side
    272,046.30x = 34,732,872,043.70
  5. Step 5: Solve for x
    x = 34,732,872,043.70/272,046.30
  6. Step 6: Final answer
    x = 127,672.65

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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.