Home / 278,736.18-418,105.98-68,373.96

Finding the Fourth Proportional to 278,736.18, 418,105.98 and 68,373.96

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Solution

The fourth proportional to 278,736.18, 418,105.98 and 68,373.96 is: 102,561.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,736.18 : 418,105.98 = 68,373.96 : x
  2. Step 2: Convert to fraction form
    278,736.18/418,105.98 = 68,373.96/x
  3. Step 3: Cross multiply
    278,736.18x = 418,105.98 × 68,373.96
  4. Step 4: Simplify right side
    278,736.18x = 28,587,561,552.28
  5. Step 5: Solve for x
    x = 28,587,561,552.28/278,736.18
  6. Step 6: Final answer
    x = 102,561.36

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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.