Home / 231,623.55-319,638.96-129,658.32

Finding the Fourth Proportional to 231,623.55, 319,638.96 and 129,658.32

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Solution

The fourth proportional to 231,623.55, 319,638.96 and 129,658.32 is: 178,927.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,623.55 : 319,638.96 = 129,658.32 : x
  2. Step 2: Convert to fraction form
    231,623.55/319,638.96 = 129,658.32/x
  3. Step 3: Cross multiply
    231,623.55x = 319,638.96 × 129,658.32
  4. Step 4: Simplify right side
    231,623.55x = 41,443,850,560.15
  5. Step 5: Solve for x
    x = 41,443,850,560.15/231,623.55
  6. Step 6: Final answer
    x = 178,927.62

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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.