Home / 159,540.12-220,166.85-87,922.68

Finding the Fourth Proportional to 159,540.12, 220,166.85 and 87,922.68

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Solution

The fourth proportional to 159,540.12, 220,166.85 and 87,922.68 is: 121,334.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,540.12 : 220,166.85 = 87,922.68 : x
  2. Step 2: Convert to fraction form
    159,540.12/220,166.85 = 87,922.68/x
  3. Step 3: Cross multiply
    159,540.12x = 220,166.85 × 87,922.68
  4. Step 4: Simplify right side
    159,540.12x = 19,357,659,499.16
  5. Step 5: Solve for x
    x = 19,357,659,499.16/159,540.12
  6. Step 6: Final answer
    x = 121,334.12

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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.