Home / 231,085.20-346,627.80-81,324.30

Finding the Fourth Proportional to 231,085.20, 346,627.80 and 81,324.30

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Solution

The fourth proportional to 231,085.20, 346,627.80 and 81,324.30 is: 121,986.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,085.20 : 346,627.80 = 81,324.30 : x
  2. Step 2: Convert to fraction form
    231,085.20/346,627.80 = 81,324.30/x
  3. Step 3: Cross multiply
    231,085.20x = 346,627.80 × 81,324.30
  4. Step 4: Simplify right side
    231,085.20x = 28,189,263,195.54
  5. Step 5: Solve for x
    x = 28,189,263,195.54/231,085.20
  6. Step 6: Final answer
    x = 121,986.45

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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.