Home / 135,346.25-186,734.88-78,746.69

Finding the Fourth Proportional to 135,346.25, 186,734.88 and 78,746.69

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Solution

The fourth proportional to 135,346.25, 186,734.88 and 78,746.69 is: 108,645.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,346.25 : 186,734.88 = 78,746.69 : x
  2. Step 2: Convert to fraction form
    135,346.25/186,734.88 = 78,746.69/x
  3. Step 3: Cross multiply
    135,346.25x = 186,734.88 × 78,746.69
  4. Step 4: Simplify right side
    135,346.25x = 14,704,752,773.87
  5. Step 5: Solve for x
    x = 14,704,752,773.87/135,346.25
  6. Step 6: Final answer
    x = 108,645.44

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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.