Home / 159,499.32-220,109.49-87,879.12

Finding the Fourth Proportional to 159,499.32, 220,109.49 and 87,879.12

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Solution

The fourth proportional to 159,499.32, 220,109.49 and 87,879.12 is: 121,273.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,499.32 : 220,109.49 = 87,879.12 : x
  2. Step 2: Convert to fraction form
    159,499.32/220,109.49 = 87,879.12/x
  3. Step 3: Cross multiply
    159,499.32x = 220,109.49 × 87,879.12
  4. Step 4: Simplify right side
    159,499.32x = 19,343,028,284.85
  5. Step 5: Solve for x
    x = 19,343,028,284.85/159,499.32
  6. Step 6: Final answer
    x = 121,273.42

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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.