Home / 136,936.92-188,971.65-76,517.97

Finding the Fourth Proportional to 136,936.92, 188,971.65 and 76,517.97

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Solution

The fourth proportional to 136,936.92, 188,971.65 and 76,517.97 is: 105,594.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,936.92 : 188,971.65 = 76,517.97 : x
  2. Step 2: Convert to fraction form
    136,936.92/188,971.65 = 76,517.97/x
  3. Step 3: Cross multiply
    136,936.92x = 188,971.65 × 76,517.97
  4. Step 4: Simplify right side
    136,936.92x = 14,459,727,045.55
  5. Step 5: Solve for x
    x = 14,459,727,045.55/136,936.92
  6. Step 6: Final answer
    x = 105,594.07

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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.