Home / 281,007.45-421,405.38-91,418.22

Finding the Fourth Proportional to 281,007.45, 421,405.38 and 91,418.22

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Solution

The fourth proportional to 281,007.45, 421,405.38 and 91,418.22 is: 137,092.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,007.45 : 421,405.38 = 91,418.22 : x
  2. Step 2: Convert to fraction form
    281,007.45/421,405.38 = 91,418.22/x
  3. Step 3: Cross multiply
    281,007.45x = 421,405.38 × 91,418.22
  4. Step 4: Simplify right side
    281,007.45x = 38,524,129,738.02
  5. Step 5: Solve for x
    x = 38,524,129,738.02/281,007.45
  6. Step 6: Final answer
    x = 137,092.91

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1.5x scale

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.