Home / 135,042.53-186,342.78-74,609.57

Finding the Fourth Proportional to 135,042.53, 186,342.78 and 74,609.57

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Solution

The fourth proportional to 135,042.53, 186,342.78 and 74,609.57 is: 102,952.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,042.53 : 186,342.78 = 74,609.57 : x
  2. Step 2: Convert to fraction form
    135,042.53/186,342.78 = 74,609.57/x
  3. Step 3: Cross multiply
    135,042.53x = 186,342.78 × 74,609.57
  4. Step 4: Simplify right side
    135,042.53x = 13,902,954,688.40
  5. Step 5: Solve for x
    x = 13,902,954,688.40/135,042.53
  6. Step 6: Final answer
    x = 102,952.42

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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.