Home / 120,675.12-181,100.22-84,901.20

Finding the Fourth Proportional to 120,675.12, 181,100.22 and 84,901.20

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Solution

The fourth proportional to 120,675.12, 181,100.22 and 84,901.20 is: 127,413.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,675.12 : 181,100.22 = 84,901.20 : x
  2. Step 2: Convert to fraction form
    120,675.12/181,100.22 = 84,901.20/x
  3. Step 3: Cross multiply
    120,675.12x = 181,100.22 × 84,901.20
  4. Step 4: Simplify right side
    120,675.12x = 15,375,625,998.26
  5. Step 5: Solve for x
    x = 15,375,625,998.26/120,675.12
  6. Step 6: Final answer
    x = 127,413.39

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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.