Home / 278,103.38-417,150.75-67,740.98

Finding the Fourth Proportional to 278,103.38, 417,150.75 and 67,740.98

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Solution

The fourth proportional to 278,103.38, 417,150.75 and 67,740.98 is: 101,610.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,103.38 : 417,150.75 = 67,740.98 : x
  2. Step 2: Convert to fraction form
    278,103.38/417,150.75 = 67,740.98/x
  3. Step 3: Cross multiply
    278,103.38x = 417,150.75 × 67,740.98
  4. Step 4: Simplify right side
    278,103.38x = 28,258,200,612.74
  5. Step 5: Solve for x
    x = 28,258,200,612.74/278,103.38
  6. Step 6: Final answer
    x = 101,610.42

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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.