Home / 185,417.80-278,256.30-80,312.20

Finding the Fourth Proportional to 185,417.80, 278,256.30 and 80,312.20

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Solution

The fourth proportional to 185,417.80, 278,256.30 and 80,312.20 is: 120,524.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,417.80 : 278,256.30 = 80,312.20 : x
  2. Step 2: Convert to fraction form
    185,417.80/278,256.30 = 80,312.20/x
  3. Step 3: Cross multiply
    185,417.80x = 278,256.30 × 80,312.20
  4. Step 4: Simplify right side
    185,417.80x = 22,347,375,616.86
  5. Step 5: Solve for x
    x = 22,347,375,616.86/185,417.80
  6. Step 6: Final answer
    x = 120,524.44

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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.