Home / 135,508.18-186,998.86-75,077.61

Finding the Fourth Proportional to 135,508.18, 186,998.86 and 75,077.61

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Solution

The fourth proportional to 135,508.18, 186,998.86 and 75,077.61 is: 103,605.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,508.18 : 186,998.86 = 75,077.61 : x
  2. Step 2: Convert to fraction form
    135,508.18/186,998.86 = 75,077.61/x
  3. Step 3: Cross multiply
    135,508.18x = 186,998.86 × 75,077.61
  4. Step 4: Simplify right side
    135,508.18x = 14,039,427,481.52
  5. Step 5: Solve for x
    x = 14,039,427,481.52/135,508.18
  6. Step 6: Final answer
    x = 103,605.76

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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.