Home / 121,579.30-181,931.55-82,213.30

Finding the Fourth Proportional to 121,579.30, 181,931.55 and 82,213.30

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Solution

The fourth proportional to 121,579.30, 181,931.55 and 82,213.30 is: 123,024.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,579.30 : 181,931.55 = 82,213.30 : x
  2. Step 2: Convert to fraction form
    121,579.30/181,931.55 = 82,213.30/x
  3. Step 3: Cross multiply
    121,579.30x = 181,931.55 × 82,213.30
  4. Step 4: Simplify right side
    121,579.30x = 14,957,193,099.62
  5. Step 5: Solve for x
    x = 14,957,193,099.62/121,579.30
  6. Step 6: Final answer
    x = 123,024.18

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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.