Home / 135,309.90-186,725.80-74,876.86

Finding the Fourth Proportional to 135,309.90, 186,725.80 and 74,876.86

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Solution

The fourth proportional to 135,309.90, 186,725.80 and 74,876.86 is: 103,329.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,309.90 : 186,725.80 = 74,876.86 : x
  2. Step 2: Convert to fraction form
    135,309.90/186,725.80 = 74,876.86/x
  3. Step 3: Cross multiply
    135,309.90x = 186,725.80 × 74,876.86
  4. Step 4: Simplify right side
    135,309.90x = 13,981,441,584.99
  5. Step 5: Solve for x
    x = 13,981,441,584.99/135,309.90
  6. Step 6: Final answer
    x = 103,329.04

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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.