Home / 136,747.50-188,721.03-76,329.92

Finding the Fourth Proportional to 136,747.50, 188,721.03 and 76,329.92

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Solution

The fourth proportional to 136,747.50, 188,721.03 and 76,329.92 is: 105,340.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,747.50 : 188,721.03 = 76,329.92 : x
  2. Step 2: Convert to fraction form
    136,747.50/188,721.03 = 76,329.92/x
  3. Step 3: Cross multiply
    136,747.50x = 188,721.03 × 76,329.92
  4. Step 4: Simplify right side
    136,747.50x = 14,405,061,122.22
  5. Step 5: Solve for x
    x = 14,405,061,122.22/136,747.50
  6. Step 6: Final answer
    x = 105,340.58

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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.