Home / 134,839.26-186,078-74,409.87

Finding the Fourth Proportional to 134,839.26, 186,078 and 74,409.87

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Solution

The fourth proportional to 134,839.26, 186,078 and 74,409.87 is: 102,685.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,839.26 : 186,078 = 74,409.87 : x
  2. Step 2: Convert to fraction form
    134,839.26/186,078 = 74,409.87/x
  3. Step 3: Cross multiply
    134,839.26x = 186,078 × 74,409.87
  4. Step 4: Simplify right side
    134,839.26x = 13,846,039,789.86
  5. Step 5: Solve for x
    x = 13,846,039,789.86/134,839.26
  6. Step 6: Final answer
    x = 102,685.52

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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.