Home / 281,112.68-421,542.23-138,902.47

Finding the Fourth Proportional to 281,112.68, 421,542.23 and 138,902.47

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Solution

The fourth proportional to 281,112.68, 421,542.23 and 138,902.47 is: 208,291.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,112.68 : 421,542.23 = 138,902.47 : x
  2. Step 2: Convert to fraction form
    281,112.68/421,542.23 = 138,902.47/x
  3. Step 3: Cross multiply
    281,112.68x = 421,542.23 × 138,902.47
  4. Step 4: Simplify right side
    281,112.68x = 58,553,255,207.94
  5. Step 5: Solve for x
    x = 58,553,255,207.94/281,112.68
  6. Step 6: Final answer
    x = 208,291.05

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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.