Home / 128,910.27-193,370.66-61,407.61

Finding the Fourth Proportional to 128,910.27, 193,370.66 and 61,407.61

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Solution

The fourth proportional to 128,910.27, 193,370.66 and 61,407.61 is: 92,113.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,910.27 : 193,370.66 = 61,407.61 : x
  2. Step 2: Convert to fraction form
    128,910.27/193,370.66 = 61,407.61/x
  3. Step 3: Cross multiply
    128,910.27x = 193,370.66 × 61,407.61
  4. Step 4: Simplify right side
    128,910.27x = 11,874,430,074.72
  5. Step 5: Solve for x
    x = 11,874,430,074.72/128,910.27
  6. Step 6: Final answer
    x = 92,113.92

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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.