Home / 281,187.13-421,700.09-91,664.04

Finding the Fourth Proportional to 281,187.13, 421,700.09 and 91,664.04

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Solution

The fourth proportional to 281,187.13, 421,700.09 and 91,664.04 is: 137,469.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,187.13 : 421,700.09 = 91,664.04 : x
  2. Step 2: Convert to fraction form
    281,187.13/421,700.09 = 91,664.04/x
  3. Step 3: Cross multiply
    281,187.13x = 421,700.09 × 91,664.04
  4. Step 4: Simplify right side
    281,187.13x = 38,654,733,184.37
  5. Step 5: Solve for x
    x = 38,654,733,184.37/281,187.13
  6. Step 6: Final answer
    x = 137,469.78

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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.