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Finding the Fourth Proportional to 158,760.88, 219,092.84 and 87,147.56

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Solution

The fourth proportional to 158,760.88, 219,092.84 and 87,147.56 is: 120,265.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,760.88 : 219,092.84 = 87,147.56 : x
  2. Step 2: Convert to fraction form
    158,760.88/219,092.84 = 87,147.56/x
  3. Step 3: Cross multiply
    158,760.88x = 219,092.84 × 87,147.56
  4. Step 4: Simplify right side
    158,760.88x = 19,093,405,983.73
  5. Step 5: Solve for x
    x = 19,093,405,983.73/158,760.88
  6. Step 6: Final answer
    x = 120,265.18

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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.