Home / 281,159.24-421,738.52-91,619.30

Finding the Fourth Proportional to 281,159.24, 421,738.52 and 91,619.30

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Solution

The fourth proportional to 281,159.24, 421,738.52 and 91,619.30 is: 137,428.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,159.24 : 421,738.52 = 91,619.30 : x
  2. Step 2: Convert to fraction form
    281,159.24/421,738.52 = 91,619.30/x
  3. Step 3: Cross multiply
    281,159.24x = 421,738.52 × 91,619.30
  4. Step 4: Simplify right side
    281,159.24x = 38,639,388,581.69
  5. Step 5: Solve for x
    x = 38,639,388,581.69/281,159.24
  6. Step 6: Final answer
    x = 137,428.84

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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.