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Finding the Fourth Proportional to 115,752.10, 173,628.15 and 68,512.90

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Solution

The fourth proportional to 115,752.10, 173,628.15 and 68,512.90 is: 102,769.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,752.10 : 173,628.15 = 68,512.90 : x
  2. Step 2: Convert to fraction form
    115,752.10/173,628.15 = 68,512.90/x
  3. Step 3: Cross multiply
    115,752.10x = 173,628.15 × 68,512.90
  4. Step 4: Simplify right side
    115,752.10x = 11,895,768,078.14
  5. Step 5: Solve for x
    x = 11,895,768,078.14/115,752.10
  6. Step 6: Final answer
    x = 102,769.35

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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.