Home / 136,736.11-188,705.31-76,318.53

Finding the Fourth Proportional to 136,736.11, 188,705.31 and 76,318.53

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Solution

The fourth proportional to 136,736.11, 188,705.31 and 76,318.53 is: 105,324.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,736.11 : 188,705.31 = 76,318.53 : x
  2. Step 2: Convert to fraction form
    136,736.11/188,705.31 = 76,318.53/x
  3. Step 3: Cross multiply
    136,736.11x = 188,705.31 × 76,318.53
  4. Step 4: Simplify right side
    136,736.11x = 14,401,711,862.39
  5. Step 5: Solve for x
    x = 14,401,711,862.39/136,736.11
  6. Step 6: Final answer
    x = 105,324.86

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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.