Home / 120,372.43-180,536.76-36,112.78

Finding the Fourth Proportional to 120,372.43, 180,536.76 and 36,112.78

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Solution

The fourth proportional to 120,372.43, 180,536.76 and 36,112.78 is: 54,162.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,372.43 : 180,536.76 = 36,112.78 : x
  2. Step 2: Convert to fraction form
    120,372.43/180,536.76 = 36,112.78/x
  3. Step 3: Cross multiply
    120,372.43x = 180,536.76 × 36,112.78
  4. Step 4: Simplify right side
    120,372.43x = 6,519,684,295.79
  5. Step 5: Solve for x
    x = 6,519,684,295.79/120,372.43
  6. Step 6: Final answer
    x = 54,162.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.