Home / 134,949.20-186,246.29-78,360.57

Finding the Fourth Proportional to 134,949.20, 186,246.29 and 78,360.57

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Solution

The fourth proportional to 134,949.20, 186,246.29 and 78,360.57 is: 108,147.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,949.20 : 186,246.29 = 78,360.57 : x
  2. Step 2: Convert to fraction form
    134,949.20/186,246.29 = 78,360.57/x
  3. Step 3: Cross multiply
    134,949.20x = 186,246.29 × 78,360.57
  4. Step 4: Simplify right side
    134,949.20x = 14,594,365,052.98
  5. Step 5: Solve for x
    x = 14,594,365,052.98/134,949.20
  6. Step 6: Final answer
    x = 108,147.11

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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.