Home / 278,767.18-418,166.66-79,071.87

Finding the Fourth Proportional to 278,767.18, 418,166.66 and 79,071.87

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Solution

The fourth proportional to 278,767.18, 418,166.66 and 79,071.87 is: 118,612.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,767.18 : 418,166.66 = 79,071.87 : x
  2. Step 2: Convert to fraction form
    278,767.18/418,166.66 = 79,071.87/x
  3. Step 3: Cross multiply
    278,767.18x = 418,166.66 × 79,071.87
  4. Step 4: Simplify right side
    278,767.18x = 33,065,219,777.85
  5. Step 5: Solve for x
    x = 33,065,219,777.85/278,767.18
  6. Step 6: Final answer
    x = 118,612.31

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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.