Home / 185,439.80-278,289.30-80,334.20

Finding the Fourth Proportional to 185,439.80, 278,289.30 and 80,334.20

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Solution

The fourth proportional to 185,439.80, 278,289.30 and 80,334.20 is: 120,557.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,439.80 : 278,289.30 = 80,334.20 : x
  2. Step 2: Convert to fraction form
    185,439.80/278,289.30 = 80,334.20/x
  3. Step 3: Cross multiply
    185,439.80x = 278,289.30 × 80,334.20
  4. Step 4: Simplify right side
    185,439.80x = 22,356,148,284.06
  5. Step 5: Solve for x
    x = 22,356,148,284.06/185,439.80
  6. Step 6: Final answer
    x = 120,557.44

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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.