Home / 231,016.01-318,803.20-129,045.76

Finding the Fourth Proportional to 231,016.01, 318,803.20 and 129,045.76

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Solution

The fourth proportional to 231,016.01, 318,803.20 and 129,045.76 is: 178,083.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,016.01 : 318,803.20 = 129,045.76 : x
  2. Step 2: Convert to fraction form
    231,016.01/318,803.20 = 129,045.76/x
  3. Step 3: Cross multiply
    231,016.01x = 318,803.20 × 129,045.76
  4. Step 4: Simplify right side
    231,016.01x = 41,140,202,222.97
  5. Step 5: Solve for x
    x = 41,140,202,222.97/231,016.01
  6. Step 6: Final answer
    x = 178,083.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.