Home / 128,321.50-192,562.44-61,768.66

Finding the Fourth Proportional to 128,321.50, 192,562.44 and 61,768.66

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Solution

The fourth proportional to 128,321.50, 192,562.44 and 61,768.66 is: 92,691.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,321.50 : 192,562.44 = 61,768.66 : x
  2. Step 2: Convert to fraction form
    128,321.50/192,562.44 = 61,768.66/x
  3. Step 3: Cross multiply
    128,321.50x = 192,562.44 × 61,768.66
  4. Step 4: Simplify right side
    128,321.50x = 11,894,323,885.13
  5. Step 5: Solve for x
    x = 11,894,323,885.13/128,321.50
  6. Step 6: Final answer
    x = 92,691.59

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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.