Home / 128,171.48-192,257.22-83,835.52

Finding the Fourth Proportional to 128,171.48, 192,257.22 and 83,835.52

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Solution

The fourth proportional to 128,171.48, 192,257.22 and 83,835.52 is: 125,753.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,171.48 : 192,257.22 = 83,835.52 : x
  2. Step 2: Convert to fraction form
    128,171.48/192,257.22 = 83,835.52/x
  3. Step 3: Cross multiply
    128,171.48x = 192,257.22 × 83,835.52
  4. Step 4: Simplify right side
    128,171.48x = 16,117,984,012.45
  5. Step 5: Solve for x
    x = 16,117,984,012.45/128,171.48
  6. Step 6: Final answer
    x = 125,753.28

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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.