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Finding the Fourth Proportional to 185,385.20, 278,077.80 and 67,060.40

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Solution

The fourth proportional to 185,385.20, 278,077.80 and 67,060.40 is: 100,590.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,385.20 : 278,077.80 = 67,060.40 : x
  2. Step 2: Convert to fraction form
    185,385.20/278,077.80 = 67,060.40/x
  3. Step 3: Cross multiply
    185,385.20x = 278,077.80 × 67,060.40
  4. Step 4: Simplify right side
    185,385.20x = 18,648,008,499.12
  5. Step 5: Solve for x
    x = 18,648,008,499.12/185,385.20
  6. Step 6: Final answer
    x = 100,590.60

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1.5x scale

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.