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Finding the Fourth Proportional to 159,499.56, 220,112.24 and 87,879.12

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Solution

The fourth proportional to 159,499.56, 220,112.24 and 87,879.12 is: 121,274.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,499.56 : 220,112.24 = 87,879.12 : x
  2. Step 2: Convert to fraction form
    159,499.56/220,112.24 = 87,879.12/x
  3. Step 3: Cross multiply
    159,499.56x = 220,112.24 × 87,879.12
  4. Step 4: Simplify right side
    159,499.56x = 19,343,269,952.43
  5. Step 5: Solve for x
    x = 19,343,269,952.43/159,499.56
  6. Step 6: Final answer
    x = 121,274.75

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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.