Home / 120,845.80-181,196.70-74,132.20

Finding the Fourth Proportional to 120,845.80, 181,196.70 and 74,132.20

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Solution

The fourth proportional to 120,845.80, 181,196.70 and 74,132.20 is: 111,154.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,845.80 : 181,196.70 = 74,132.20 : x
  2. Step 2: Convert to fraction form
    120,845.80/181,196.70 = 74,132.20/x
  3. Step 3: Cross multiply
    120,845.80x = 181,196.70 × 74,132.20
  4. Step 4: Simplify right side
    120,845.80x = 13,432,510,003.74
  5. Step 5: Solve for x
    x = 13,432,510,003.74/120,845.80
  6. Step 6: Final answer
    x = 111,154.13

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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.