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Finding the Fourth Proportional to 159,507.82, 220,121.22 and 87,887.62

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Solution

The fourth proportional to 159,507.82, 220,121.22 and 87,887.62 is: 121,285.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,507.82 : 220,121.22 = 87,887.62 : x
  2. Step 2: Convert to fraction form
    159,507.82/220,121.22 = 87,887.62/x
  3. Step 3: Cross multiply
    159,507.82x = 220,121.22 × 87,887.62
  4. Step 4: Simplify right side
    159,507.82x = 19,345,930,137.30
  5. Step 5: Solve for x
    x = 19,345,930,137.30/159,507.82
  6. Step 6: Final answer
    x = 121,285.15

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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.