Home / 121,747.20-182,496.60-82,308.30

Finding the Fourth Proportional to 121,747.20, 182,496.60 and 82,308.30

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Solution

The fourth proportional to 121,747.20, 182,496.60 and 82,308.30 is: 123,378.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,747.20 : 182,496.60 = 82,308.30 : x
  2. Step 2: Convert to fraction form
    121,747.20/182,496.60 = 82,308.30/x
  3. Step 3: Cross multiply
    121,747.20x = 182,496.60 × 82,308.30
  4. Step 4: Simplify right side
    121,747.20x = 15,020,984,901.78
  5. Step 5: Solve for x
    x = 15,020,984,901.78/121,747.20
  6. Step 6: Final answer
    x = 123,378.48

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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.