Home / 136,936.16-188,970.62-76,517.21

Finding the Fourth Proportional to 136,936.16, 188,970.62 and 76,517.21

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Solution

The fourth proportional to 136,936.16, 188,970.62 and 76,517.21 is: 105,593.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,936.16 : 188,970.62 = 76,517.21 : x
  2. Step 2: Convert to fraction form
    136,936.16/188,970.62 = 76,517.21/x
  3. Step 3: Cross multiply
    136,936.16x = 188,970.62 × 76,517.21
  4. Step 4: Simplify right side
    136,936.16x = 14,459,505,278.09
  5. Step 5: Solve for x
    x = 14,459,505,278.09/136,936.16
  6. Step 6: Final answer
    x = 105,593.04

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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.