Home / 158,761.11-219,092.91-87,147.79

Finding the Fourth Proportional to 158,761.11, 219,092.91 and 87,147.79

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Solution

The fourth proportional to 158,761.11, 219,092.91 and 87,147.79 is: 120,265.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,761.11 : 219,092.91 = 87,147.79 : x
  2. Step 2: Convert to fraction form
    158,761.11/219,092.91 = 87,147.79/x
  3. Step 3: Cross multiply
    158,761.11x = 219,092.91 × 87,147.79
  4. Step 4: Simplify right side
    158,761.11x = 19,093,462,911.17
  5. Step 5: Solve for x
    x = 19,093,462,911.17/158,761.11
  6. Step 6: Final answer
    x = 120,265.37

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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.