Home / 136,568.49-188,465.31-76,142.94

Finding the Fourth Proportional to 136,568.49, 188,465.31 and 76,142.94

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Solution

The fourth proportional to 136,568.49, 188,465.31 and 76,142.94 is: 105,077.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,568.49 : 188,465.31 = 76,142.94 : x
  2. Step 2: Convert to fraction form
    136,568.49/188,465.31 = 76,142.94/x
  3. Step 3: Cross multiply
    136,568.49x = 188,465.31 × 76,142.94
  4. Step 4: Simplify right side
    136,568.49x = 14,350,302,791.41
  5. Step 5: Solve for x
    x = 14,350,302,791.41/136,568.49
  6. Step 6: Final answer
    x = 105,077.70

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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.