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Finding the Fourth Proportional to 159,991.32, 220,769.10 and 88,367.07

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Solution

The fourth proportional to 159,991.32, 220,769.10 and 88,367.07 is: 121,936.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,991.32 : 220,769.10 = 88,367.07 : x
  2. Step 2: Convert to fraction form
    159,991.32/220,769.10 = 88,367.07/x
  3. Step 3: Cross multiply
    159,991.32x = 220,769.10 × 88,367.07
  4. Step 4: Simplify right side
    159,991.32x = 19,508,718,513.54
  5. Step 5: Solve for x
    x = 19,508,718,513.54/159,991.32
  6. Step 6: Final answer
    x = 121,936.11

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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.