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Finding the Fourth Proportional to 121,493.20, 182,434.20 and 82,224.40

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Solution

The fourth proportional to 121,493.20, 182,434.20 and 82,224.40 is: 123,468.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,493.20 : 182,434.20 = 82,224.40 : x
  2. Step 2: Convert to fraction form
    121,493.20/182,434.20 = 82,224.40/x
  3. Step 3: Cross multiply
    121,493.20x = 182,434.20 × 82,224.40
  4. Step 4: Simplify right side
    121,493.20x = 15,000,542,634.48
  5. Step 5: Solve for x
    x = 15,000,542,634.48/121,493.20
  6. Step 6: Final answer
    x = 123,468.17

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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.