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Finding the Fourth Proportional to 159,596.40, 220,234.20 and 87,976.32

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Solution

The fourth proportional to 159,596.40, 220,234.20 and 87,976.32 is: 121,402.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,596.40 : 220,234.20 = 87,976.32 : x
  2. Step 2: Convert to fraction form
    159,596.40/220,234.20 = 87,976.32/x
  3. Step 3: Cross multiply
    159,596.40x = 220,234.20 × 87,976.32
  4. Step 4: Simplify right side
    159,596.40x = 19,375,394,454.14
  5. Step 5: Solve for x
    x = 19,375,394,454.14/159,596.40
  6. Step 6: Final answer
    x = 121,402.45

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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.