Home / 231,625.12-319,639.60-131,023.12

Finding the Fourth Proportional to 231,625.12, 319,639.60 and 131,023.12

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Solution

The fourth proportional to 231,625.12, 319,639.60 and 131,023.12 is: 180,810.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,625.12 : 319,639.60 = 131,023.12 : x
  2. Step 2: Convert to fraction form
    231,625.12/319,639.60 = 131,023.12/x
  3. Step 3: Cross multiply
    231,625.12x = 319,639.60 × 131,023.12
  4. Step 4: Simplify right side
    231,625.12x = 41,880,177,667.55
  5. Step 5: Solve for x
    x = 41,880,177,667.55/231,625.12
  6. Step 6: Final answer
    x = 180,810.17

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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.