Home / 139,787.68-192,910.06-76,125.48

Finding the Fourth Proportional to 139,787.68, 192,910.06 and 76,125.48

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Solution

The fourth proportional to 139,787.68, 192,910.06 and 76,125.48 is: 105,054.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,787.68 : 192,910.06 = 76,125.48 : x
  2. Step 2: Convert to fraction form
    139,787.68/192,910.06 = 76,125.48/x
  3. Step 3: Cross multiply
    139,787.68x = 192,910.06 × 76,125.48
  4. Step 4: Simplify right side
    139,787.68x = 14,685,370,914.33
  5. Step 5: Solve for x
    x = 14,685,370,914.33/139,787.68
  6. Step 6: Final answer
    x = 105,054.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.