Home / 281,137.30-421,727.82-81,460.56

Finding the Fourth Proportional to 281,137.30, 421,727.82 and 81,460.56

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Solution

The fourth proportional to 281,137.30, 421,727.82 and 81,460.56 is: 122,197.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,137.30 : 421,727.82 = 81,460.56 : x
  2. Step 2: Convert to fraction form
    281,137.30/421,727.82 = 81,460.56/x
  3. Step 3: Cross multiply
    281,137.30x = 421,727.82 × 81,460.56
  4. Step 4: Simplify right side
    281,137.30x = 34,354,182,276.14
  5. Step 5: Solve for x
    x = 34,354,182,276.14/281,137.30
  6. Step 6: Final answer
    x = 122,197.17

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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.