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Finding the Fourth Proportional to 159,638.88, 220,306.80 and 88,021.44

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Solution

The fourth proportional to 159,638.88, 220,306.80 and 88,021.44 is: 121,472.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,638.88 : 220,306.80 = 88,021.44 : x
  2. Step 2: Convert to fraction form
    159,638.88/220,306.80 = 88,021.44/x
  3. Step 3: Cross multiply
    159,638.88x = 220,306.80 × 88,021.44
  4. Step 4: Simplify right side
    159,638.88x = 19,391,721,777.79
  5. Step 5: Solve for x
    x = 19,391,721,777.79/159,638.88
  6. Step 6: Final answer
    x = 121,472.42

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1.5x scale

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.