Home / 185,612.40-278,520.66-80,432.28

Finding the Fourth Proportional to 185,612.40, 278,520.66 and 80,432.28

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Solution

The fourth proportional to 185,612.40, 278,520.66 and 80,432.28 is: 120,692.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,612.40 : 278,520.66 = 80,432.28 : x
  2. Step 2: Convert to fraction form
    185,612.40/278,520.66 = 80,432.28/x
  3. Step 3: Cross multiply
    185,612.40x = 278,520.66 × 80,432.28
  4. Step 4: Simplify right side
    185,612.40x = 22,402,051,710.90
  5. Step 5: Solve for x
    x = 22,402,051,710.90/185,612.40
  6. Step 6: Final answer
    x = 120,692.65

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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.