Home / 136,619.67-188,534.78-76,190.38

Finding the Fourth Proportional to 136,619.67, 188,534.78 and 76,190.38

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Solution

The fourth proportional to 136,619.67, 188,534.78 and 76,190.38 is: 105,142.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,619.67 : 188,534.78 = 76,190.38 : x
  2. Step 2: Convert to fraction form
    136,619.67/188,534.78 = 76,190.38/x
  3. Step 3: Cross multiply
    136,619.67x = 188,534.78 × 76,190.38
  4. Step 4: Simplify right side
    136,619.67x = 14,364,536,586.80
  5. Step 5: Solve for x
    x = 14,364,536,586.80/136,619.67
  6. Step 6: Final answer
    x = 105,142.52

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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.