Home / 185,710.20-278,565.30-67,385.40

Finding the Fourth Proportional to 185,710.20, 278,565.30 and 67,385.40

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Solution

The fourth proportional to 185,710.20, 278,565.30 and 67,385.40 is: 101,078.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,710.20 : 278,565.30 = 67,385.40 : x
  2. Step 2: Convert to fraction form
    185,710.20/278,565.30 = 67,385.40/x
  3. Step 3: Cross multiply
    185,710.20x = 278,565.30 × 67,385.40
  4. Step 4: Simplify right side
    185,710.20x = 18,771,234,166.62
  5. Step 5: Solve for x
    x = 18,771,234,166.62/185,710.20
  6. Step 6: Final answer
    x = 101,078.10

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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.