Home / 80,209.96-120,273.40-42,759.97

Finding the Fourth Proportional to 80,209.96, 120,273.40 and 42,759.97

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Solution

The fourth proportional to 80,209.96, 120,273.40 and 42,759.97 is: 64,117.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,209.96 : 120,273.40 = 42,759.97 : x
  2. Step 2: Convert to fraction form
    80,209.96/120,273.40 = 42,759.97/x
  3. Step 3: Cross multiply
    80,209.96x = 120,273.40 × 42,759.97
  4. Step 4: Simplify right side
    80,209.96x = 5,142,886,160.63
  5. Step 5: Solve for x
    x = 5,142,886,160.63/80,209.96
  6. Step 6: Final answer
    x = 64,117.80

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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.