Home / 134,947.50-186,243.96-78,358.88

Finding the Fourth Proportional to 134,947.50, 186,243.96 and 78,358.88

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Solution

The fourth proportional to 134,947.50, 186,243.96 and 78,358.88 is: 108,144.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,947.50 : 186,243.96 = 78,358.88 : x
  2. Step 2: Convert to fraction form
    134,947.50/186,243.96 = 78,358.88/x
  3. Step 3: Cross multiply
    134,947.50x = 186,243.96 × 78,358.88
  4. Step 4: Simplify right side
    134,947.50x = 14,593,867,181.15
  5. Step 5: Solve for x
    x = 14,593,867,181.15/134,947.50
  6. Step 6: Final answer
    x = 108,144.78

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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.