Home / 236,678.11-355,020.30-78,906.61

Finding the Fourth Proportional to 236,678.11, 355,020.30 and 78,906.61

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Solution

The fourth proportional to 236,678.11, 355,020.30 and 78,906.61 is: 118,360.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,678.11 : 355,020.30 = 78,906.61 : x
  2. Step 2: Convert to fraction form
    236,678.11/355,020.30 = 78,906.61/x
  3. Step 3: Cross multiply
    236,678.11x = 355,020.30 × 78,906.61
  4. Step 4: Simplify right side
    236,678.11x = 28,013,448,797.96
  5. Step 5: Solve for x
    x = 28,013,448,797.96/236,678.11
  6. Step 6: Final answer
    x = 118,360.96

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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.