Home / 80,209.70-120,273.02-42,759.72

Finding the Fourth Proportional to 80,209.70, 120,273.02 and 42,759.72

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Solution

The fourth proportional to 80,209.70, 120,273.02 and 42,759.72 is: 64,117.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,209.70 : 120,273.02 = 42,759.72 : x
  2. Step 2: Convert to fraction form
    80,209.70/120,273.02 = 42,759.72/x
  3. Step 3: Cross multiply
    80,209.70x = 120,273.02 × 42,759.72
  4. Step 4: Simplify right side
    80,209.70x = 5,142,840,658.75
  5. Step 5: Solve for x
    x = 5,142,840,658.75/80,209.70
  6. Step 6: Final answer
    x = 64,117.44

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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.