Home / 120,463.78-180,575.38-80,516.41

Finding the Fourth Proportional to 120,463.78, 180,575.38 and 80,516.41

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Solution

The fourth proportional to 120,463.78, 180,575.38 and 80,516.41 is: 120,694.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,463.78 : 180,575.38 = 80,516.41 : x
  2. Step 2: Convert to fraction form
    120,463.78/180,575.38 = 80,516.41/x
  3. Step 3: Cross multiply
    120,463.78x = 180,575.38 × 80,516.41
  4. Step 4: Simplify right side
    120,463.78x = 14,539,281,331.99
  5. Step 5: Solve for x
    x = 14,539,281,331.99/120,463.78
  6. Step 6: Final answer
    x = 120,694.21

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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.