Home / 120,906.20-181,272.90-54,291.80

Finding the Fourth Proportional to 120,906.20, 181,272.90 and 54,291.80

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Solution

The fourth proportional to 120,906.20, 181,272.90 and 54,291.80 is: 81,398.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,906.20 : 181,272.90 = 54,291.80 : x
  2. Step 2: Convert to fraction form
    120,906.20/181,272.90 = 54,291.80/x
  3. Step 3: Cross multiply
    120,906.20x = 181,272.90 × 54,291.80
  4. Step 4: Simplify right side
    120,906.20x = 9,841,632,032.22
  5. Step 5: Solve for x
    x = 9,841,632,032.22/120,906.20
  6. Step 6: Final answer
    x = 81,398.90

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1.5x scale

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.