Home / 128,422.60-192,576.30-58,265.80

Finding the Fourth Proportional to 128,422.60, 192,576.30 and 58,265.80

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Solution

The fourth proportional to 128,422.60, 192,576.30 and 58,265.80 is: 87,372.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,422.60 : 192,576.30 = 58,265.80 : x
  2. Step 2: Convert to fraction form
    128,422.60/192,576.30 = 58,265.80/x
  3. Step 3: Cross multiply
    128,422.60x = 192,576.30 × 58,265.80
  4. Step 4: Simplify right side
    128,422.60x = 11,220,612,180.54
  5. Step 5: Solve for x
    x = 11,220,612,180.54/128,422.60
  6. Step 6: Final answer
    x = 87,372.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.