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Finding the Fourth Proportional to 115,879.40, 173,819.10 and 113,911.10

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Solution

The fourth proportional to 115,879.40, 173,819.10 and 113,911.10 is: 170,866.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,879.40 : 173,819.10 = 113,911.10 : x
  2. Step 2: Convert to fraction form
    115,879.40/173,819.10 = 113,911.10/x
  3. Step 3: Cross multiply
    115,879.40x = 173,819.10 × 113,911.10
  4. Step 4: Simplify right side
    115,879.40x = 19,799,924,882.01
  5. Step 5: Solve for x
    x = 19,799,924,882.01/115,879.40
  6. Step 6: Final answer
    x = 170,866.65

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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.