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Finding the Fourth Proportional to 159,596.43, 220,244.60 and 87,979.03

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Solution

The fourth proportional to 159,596.43, 220,244.60 and 87,979.03 is: 121,411.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,596.43 : 220,244.60 = 87,979.03 : x
  2. Step 2: Convert to fraction form
    159,596.43/220,244.60 = 87,979.03/x
  3. Step 3: Cross multiply
    159,596.43x = 220,244.60 × 87,979.03
  4. Step 4: Simplify right side
    159,596.43x = 19,376,905,940.07
  5. Step 5: Solve for x
    x = 19,376,905,940.07/159,596.43
  6. Step 6: Final answer
    x = 121,411.90

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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.