Home / 136,647.24-188,573.42-76,221.80

Finding the Fourth Proportional to 136,647.24, 188,573.42 and 76,221.80

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Solution

The fourth proportional to 136,647.24, 188,573.42 and 76,221.80 is: 105,186.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,647.24 : 188,573.42 = 76,221.80 : x
  2. Step 2: Convert to fraction form
    136,647.24/188,573.42 = 76,221.80/x
  3. Step 3: Cross multiply
    136,647.24x = 188,573.42 × 76,221.80
  4. Step 4: Simplify right side
    136,647.24x = 14,373,405,504.56
  5. Step 5: Solve for x
    x = 14,373,405,504.56/136,647.24
  6. Step 6: Final answer
    x = 105,186.21

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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.