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Finding the Fourth Proportional to 115,862, 173,407.26 and 87,626.48

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Solution

The fourth proportional to 115,862, 173,407.26 and 87,626.48 is: 131,147.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,862 : 173,407.26 = 87,626.48 : x
  2. Step 2: Convert to fraction form
    115,862/173,407.26 = 87,626.48/x
  3. Step 3: Cross multiply
    115,862x = 173,407.26 × 87,626.48
  4. Step 4: Simplify right side
    115,862x = 15,195,067,800.24
  5. Step 5: Solve for x
    x = 15,195,067,800.24/115,862
  6. Step 6: Final answer
    x = 131,147.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.