Home / 158,720.74-219,040.92-87,103.31

Finding the Fourth Proportional to 158,720.74, 219,040.92 and 87,103.31

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Solution

The fourth proportional to 158,720.74, 219,040.92 and 87,103.31 is: 120,206.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,720.74 : 219,040.92 = 87,103.31 : x
  2. Step 2: Convert to fraction form
    158,720.74/219,040.92 = 87,103.31/x
  3. Step 3: Cross multiply
    158,720.74x = 219,040.92 × 87,103.31
  4. Step 4: Simplify right side
    158,720.74x = 19,079,188,062.24
  5. Step 5: Solve for x
    x = 19,079,188,062.24/158,720.74
  6. Step 6: Final answer
    x = 120,206.02

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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.