Home / 231,555.14-319,559.56-129,579.72

Finding the Fourth Proportional to 231,555.14, 319,559.56 and 129,579.72

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Solution

The fourth proportional to 231,555.14, 319,559.56 and 129,579.72 is: 178,827.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,555.14 : 319,559.56 = 129,579.72 : x
  2. Step 2: Convert to fraction form
    231,555.14/319,559.56 = 129,579.72/x
  3. Step 3: Cross multiply
    231,555.14x = 319,559.56 × 129,579.72
  4. Step 4: Simplify right side
    231,555.14x = 41,408,438,308.12
  5. Step 5: Solve for x
    x = 41,408,438,308.12/231,555.14
  6. Step 6: Final answer
    x = 178,827.55

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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.