Home / 84,136.34-126,189.92-21,806.84

Finding the Fourth Proportional to 84,136.34, 126,189.92 and 21,806.84

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Solution

The fourth proportional to 84,136.34, 126,189.92 and 21,806.84 is: 32,706.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,136.34 : 126,189.92 = 21,806.84 : x
  2. Step 2: Convert to fraction form
    84,136.34/126,189.92 = 21,806.84/x
  3. Step 3: Cross multiply
    84,136.34x = 126,189.92 × 21,806.84
  4. Step 4: Simplify right side
    84,136.34x = 2,751,802,655.07
  5. Step 5: Solve for x
    x = 2,751,802,655.07/84,136.34
  6. Step 6: Final answer
    x = 32,706.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.