Home / 128,650.46-192,872.59-61,148.61

Finding the Fourth Proportional to 128,650.46, 192,872.59 and 61,148.61

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Solution

The fourth proportional to 128,650.46, 192,872.59 and 61,148.61 is: 91,673.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,650.46 : 192,872.59 = 61,148.61 : x
  2. Step 2: Convert to fraction form
    128,650.46/192,872.59 = 61,148.61/x
  3. Step 3: Cross multiply
    128,650.46x = 192,872.59 × 61,148.61
  4. Step 4: Simplify right side
    128,650.46x = 11,793,890,632.73
  5. Step 5: Solve for x
    x = 11,793,890,632.73/128,650.46
  6. Step 6: Final answer
    x = 91,673.91

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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.