Home / 281,313.45-421,859.00-91,727.21

Finding the Fourth Proportional to 281,313.45, 421,859.00 and 91,727.21

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Solution

The fourth proportional to 281,313.45, 421,859.00 and 91,727.21 is: 137,554.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,313.45 : 421,859.00 = 91,727.21 : x
  2. Step 2: Convert to fraction form
    281,313.45/421,859.00 = 91,727.21/x
  3. Step 3: Cross multiply
    281,313.45x = 421,859.00 × 91,727.21
  4. Step 4: Simplify right side
    281,313.45x = 38,695,950,367.36
  5. Step 5: Solve for x
    x = 38,695,950,367.36/281,313.45
  6. Step 6: Final answer
    x = 137,554.57

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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.