Home / 185,380.90-278,068.92-45,139.66

Finding the Fourth Proportional to 185,380.90, 278,068.92 and 45,139.66

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Solution

The fourth proportional to 185,380.90, 278,068.92 and 45,139.66 is: 67,708.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,380.90 : 278,068.92 = 45,139.66 : x
  2. Step 2: Convert to fraction form
    185,380.90/278,068.92 = 45,139.66/x
  3. Step 3: Cross multiply
    185,380.90x = 278,068.92 × 45,139.66
  4. Step 4: Simplify right side
    185,380.90x = 12,551,936,505.37
  5. Step 5: Solve for x
    x = 12,551,936,505.37/185,380.90
  6. Step 6: Final answer
    x = 67,708.90

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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.