Home / 121,738.20-182,483.10-82,299.30

Finding the Fourth Proportional to 121,738.20, 182,483.10 and 82,299.30

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Solution

The fourth proportional to 121,738.20, 182,483.10 and 82,299.30 is: 123,364.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,738.20 : 182,483.10 = 82,299.30 : x
  2. Step 2: Convert to fraction form
    121,738.20/182,483.10 = 82,299.30/x
  3. Step 3: Cross multiply
    121,738.20x = 182,483.10 × 82,299.30
  4. Step 4: Simplify right side
    121,738.20x = 15,018,231,391.83
  5. Step 5: Solve for x
    x = 15,018,231,391.83/121,738.20
  6. Step 6: Final answer
    x = 123,364.99

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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.