Home / 231,132.88-318,957.26-129,159.18

Finding the Fourth Proportional to 231,132.88, 318,957.26 and 129,159.18

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Solution

The fourth proportional to 231,132.88, 318,957.26 and 129,159.18 is: 178,236.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,132.88 : 318,957.26 = 129,159.18 : x
  2. Step 2: Convert to fraction form
    231,132.88/318,957.26 = 129,159.18/x
  3. Step 3: Cross multiply
    231,132.88x = 318,957.26 × 129,159.18
  4. Step 4: Simplify right side
    231,132.88x = 41,196,258,156.65
  5. Step 5: Solve for x
    x = 41,196,258,156.65/231,132.88
  6. Step 6: Final answer
    x = 178,236.25

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1.5x scale

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.