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Finding the Fourth Proportional to 115,864, 173,410.26 and 87,628.48

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Solution

The fourth proportional to 115,864, 173,410.26 and 87,628.48 is: 131,150.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,864 : 173,410.26 = 87,628.48 : x
  2. Step 2: Convert to fraction form
    115,864/173,410.26 = 87,628.48/x
  3. Step 3: Cross multiply
    115,864x = 173,410.26 × 87,628.48
  4. Step 4: Simplify right side
    115,864x = 15,195,677,500.20
  5. Step 5: Solve for x
    x = 15,195,677,500.20/115,864
  6. Step 6: Final answer
    x = 131,150.98

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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.