Home / 231,580.77-319,595.55-129,604.15

Finding the Fourth Proportional to 231,580.77, 319,595.55 and 129,604.15

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Solution

The fourth proportional to 231,580.77, 319,595.55 and 129,604.15 is: 178,861.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,580.77 : 319,595.55 = 129,604.15 : x
  2. Step 2: Convert to fraction form
    231,580.77/319,595.55 = 129,604.15/x
  3. Step 3: Cross multiply
    231,580.77x = 319,595.55 × 129,604.15
  4. Step 4: Simplify right side
    231,580.77x = 41,420,909,515.01
  5. Step 5: Solve for x
    x = 41,420,909,515.01/231,580.77
  6. Step 6: Final answer
    x = 178,861.61

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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.