Home / 161,132.56-222,422.84-138,380.20

Finding the Fourth Proportional to 161,132.56, 222,422.84 and 138,380.20

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Solution

The fourth proportional to 161,132.56, 222,422.84 and 138,380.20 is: 191,016.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,132.56 : 222,422.84 = 138,380.20 : x
  2. Step 2: Convert to fraction form
    161,132.56/222,422.84 = 138,380.20/x
  3. Step 3: Cross multiply
    161,132.56x = 222,422.84 × 138,380.20
  4. Step 4: Simplify right side
    161,132.56x = 30,778,917,083.77
  5. Step 5: Solve for x
    x = 30,778,917,083.77/161,132.56
  6. Step 6: Final answer
    x = 191,016.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.