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Finding the Fourth Proportional to 159,700.56, 220,396.88 and 88,080.72

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Solution

The fourth proportional to 159,700.56, 220,396.88 and 88,080.72 is: 121,556.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,700.56 : 220,396.88 = 88,080.72 : x
  2. Step 2: Convert to fraction form
    159,700.56/220,396.88 = 88,080.72/x
  3. Step 3: Cross multiply
    159,700.56x = 220,396.88 × 88,080.72
  4. Step 4: Simplify right side
    159,700.56x = 19,412,715,876.15
  5. Step 5: Solve for x
    x = 19,412,715,876.15/159,700.56
  6. Step 6: Final answer
    x = 121,556.97

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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.