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Finding the Fourth Proportional to 115,168, 172,473.36 and 55,856.80

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Solution

The fourth proportional to 115,168, 172,473.36 and 55,856.80 is: 83,650.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,168 : 172,473.36 = 55,856.80 : x
  2. Step 2: Convert to fraction form
    115,168/172,473.36 = 55,856.80/x
  3. Step 3: Cross multiply
    115,168x = 172,473.36 × 55,856.80
  4. Step 4: Simplify right side
    115,168x = 9,633,809,974.85
  5. Step 5: Solve for x
    x = 9,633,809,974.85/115,168
  6. Step 6: Final answer
    x = 83,650.06

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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.