Home / 136,772.75-188,755.91-76,355.19

Finding the Fourth Proportional to 136,772.75, 188,755.91 and 76,355.19

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Solution

The fourth proportional to 136,772.75, 188,755.91 and 76,355.19 is: 105,375.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,772.75 : 188,755.91 = 76,355.19 : x
  2. Step 2: Convert to fraction form
    136,772.75/188,755.91 = 76,355.19/x
  3. Step 3: Cross multiply
    136,772.75x = 188,755.91 × 76,355.19
  4. Step 4: Simplify right side
    136,772.75x = 14,412,492,989.90
  5. Step 5: Solve for x
    x = 14,412,492,989.90/136,772.75
  6. Step 6: Final answer
    x = 105,375.48

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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.