Home / 135,382.23-186,876.55-78,793.61

Finding the Fourth Proportional to 135,382.23, 186,876.55 and 78,793.61

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Solution

The fourth proportional to 135,382.23, 186,876.55 and 78,793.61 is: 108,763.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,382.23 : 186,876.55 = 78,793.61 : x
  2. Step 2: Convert to fraction form
    135,382.23/186,876.55 = 78,793.61/x
  3. Step 3: Cross multiply
    135,382.23x = 186,876.55 × 78,793.61
  4. Step 4: Simplify right side
    135,382.23x = 14,724,677,162.95
  5. Step 5: Solve for x
    x = 14,724,677,162.95/135,382.23
  6. Step 6: Final answer
    x = 108,763.74

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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.