Home / 120,982.20-181,473.30-83,657.40

Finding the Fourth Proportional to 120,982.20, 181,473.30 and 83,657.40

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Solution

The fourth proportional to 120,982.20, 181,473.30 and 83,657.40 is: 125,486.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,982.20 : 181,473.30 = 83,657.40 : x
  2. Step 2: Convert to fraction form
    120,982.20/181,473.30 = 83,657.40/x
  3. Step 3: Cross multiply
    120,982.20x = 181,473.30 × 83,657.40
  4. Step 4: Simplify right side
    120,982.20x = 15,181,584,447.42
  5. Step 5: Solve for x
    x = 15,181,584,447.42/120,982.20
  6. Step 6: Final answer
    x = 125,486.10

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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.