Home / 281,136.11-421,726.04-81,459.37

Finding the Fourth Proportional to 281,136.11, 421,726.04 and 81,459.37

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Solution

The fourth proportional to 281,136.11, 421,726.04 and 81,459.37 is: 122,195.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,136.11 : 421,726.04 = 81,459.37 : x
  2. Step 2: Convert to fraction form
    281,136.11/421,726.04 = 81,459.37/x
  3. Step 3: Cross multiply
    281,136.11x = 421,726.04 × 81,459.37
  4. Step 4: Simplify right side
    281,136.11x = 34,353,536,680.33
  5. Step 5: Solve for x
    x = 34,353,536,680.33/281,136.11
  6. Step 6: Final answer
    x = 122,195.39

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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.