Home / 159,971.16-220,761.18-87,372.12

Finding the Fourth Proportional to 159,971.16, 220,761.18 and 87,372.12

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Solution

The fourth proportional to 159,971.16, 220,761.18 and 87,372.12 is: 120,574.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,971.16 : 220,761.18 = 87,372.12 : x
  2. Step 2: Convert to fraction form
    159,971.16/220,761.18 = 87,372.12/x
  3. Step 3: Cross multiply
    159,971.16x = 220,761.18 × 87,372.12
  4. Step 4: Simplify right side
    159,971.16x = 19,288,372,310.30
  5. Step 5: Solve for x
    x = 19,288,372,310.30/159,971.16
  6. Step 6: Final answer
    x = 120,574.06

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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.