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Finding the Fourth Proportional to 159,596.69, 220,244.90 and 87,979.27

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Solution

The fourth proportional to 159,596.69, 220,244.90 and 87,979.27 is: 121,412.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,596.69 : 220,244.90 = 87,979.27 : x
  2. Step 2: Convert to fraction form
    159,596.69/220,244.90 = 87,979.27/x
  3. Step 3: Cross multiply
    159,596.69x = 220,244.90 × 87,979.27
  4. Step 4: Simplify right side
    159,596.69x = 19,376,985,192.56
  5. Step 5: Solve for x
    x = 19,376,985,192.56/159,596.69
  6. Step 6: Final answer
    x = 121,412.20

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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.