Home / 136,520.40-188,375.31-76,077.80

Finding the Fourth Proportional to 136,520.40, 188,375.31 and 76,077.80

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Solution

The fourth proportional to 136,520.40, 188,375.31 and 76,077.80 is: 104,974.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,520.40 : 188,375.31 = 76,077.80 : x
  2. Step 2: Convert to fraction form
    136,520.40/188,375.31 = 76,077.80/x
  3. Step 3: Cross multiply
    136,520.40x = 188,375.31 × 76,077.80
  4. Step 4: Simplify right side
    136,520.40x = 14,331,178,217.24
  5. Step 5: Solve for x
    x = 14,331,178,217.24/136,520.40
  6. Step 6: Final answer
    x = 104,974.63

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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.