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Finding the Fourth Proportional to 159,561.33, 220,196.06 and 87,943.86

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Solution

The fourth proportional to 159,561.33, 220,196.06 and 87,943.86 is: 121,363.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,561.33 : 220,196.06 = 87,943.86 : x
  2. Step 2: Convert to fraction form
    159,561.33/220,196.06 = 87,943.86/x
  3. Step 3: Cross multiply
    159,561.33x = 220,196.06 × 87,943.86
  4. Step 4: Simplify right side
    159,561.33x = 19,364,891,473.19
  5. Step 5: Solve for x
    x = 19,364,891,473.19/159,561.33
  6. Step 6: Final answer
    x = 121,363.31

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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.