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Finding the Fourth Proportional to 136,169.60, 187,911.32 and 75,738.94

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Solution

The fourth proportional to 136,169.60, 187,911.32 and 75,738.94 is: 104,518.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,169.60 : 187,911.32 = 75,738.94 : x
  2. Step 2: Convert to fraction form
    136,169.60/187,911.32 = 75,738.94/x
  3. Step 3: Cross multiply
    136,169.60x = 187,911.32 × 75,738.94
  4. Step 4: Simplify right side
    136,169.60x = 14,232,204,190.80
  5. Step 5: Solve for x
    x = 14,232,204,190.80/136,169.60
  6. Step 6: Final answer
    x = 104,518.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.