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Finding the Fourth Proportional to 281,087.93, 421,661.43 and 91,563.08

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Solution

The fourth proportional to 281,087.93, 421,661.43 and 91,563.08 is: 137,354.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,087.93 : 421,661.43 = 91,563.08 : x
  2. Step 2: Convert to fraction form
    281,087.93/421,661.43 = 91,563.08/x
  3. Step 3: Cross multiply
    281,087.93x = 421,661.43 × 91,563.08
  4. Step 4: Simplify right side
    281,087.93x = 38,608,617,139.70
  5. Step 5: Solve for x
    x = 38,608,617,139.70/281,087.93
  6. Step 6: Final answer
    x = 137,354.23

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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.