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Finding the Fourth Proportional to 159,705.86, 220,394.30 and 88,085.88

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Solution

The fourth proportional to 159,705.86, 220,394.30 and 88,085.88 is: 121,558.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,705.86 : 220,394.30 = 88,085.88 : x
  2. Step 2: Convert to fraction form
    159,705.86/220,394.30 = 88,085.88/x
  3. Step 3: Cross multiply
    159,705.86x = 220,394.30 × 88,085.88
  4. Step 4: Simplify right side
    159,705.86x = 19,413,625,422.05
  5. Step 5: Solve for x
    x = 19,413,625,422.05/159,705.86
  6. Step 6: Final answer
    x = 121,558.63

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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.