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Finding the Fourth Proportional to 171,791.54, 257,711.62 and 66,621.14

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Solution

The fourth proportional to 171,791.54, 257,711.62 and 66,621.14 is: 99,941.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,791.54 : 257,711.62 = 66,621.14 : x
  2. Step 2: Convert to fraction form
    171,791.54/257,711.62 = 66,621.14/x
  3. Step 3: Cross multiply
    171,791.54x = 257,711.62 × 66,621.14
  4. Step 4: Simplify right side
    171,791.54x = 17,169,041,915.65
  5. Step 5: Solve for x
    x = 17,169,041,915.65/171,791.54
  6. Step 6: Final answer
    x = 99,941.14

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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.