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Finding the Fourth Proportional to 171,641.26, 257,426.69 and 64,988.42

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Solution

The fourth proportional to 171,641.26, 257,426.69 and 64,988.42 is: 97,469.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,641.26 : 257,426.69 = 64,988.42 : x
  2. Step 2: Convert to fraction form
    171,641.26/257,426.69 = 64,988.42/x
  3. Step 3: Cross multiply
    171,641.26x = 257,426.69 × 64,988.42
  4. Step 4: Simplify right side
    171,641.26x = 16,729,753,206.94
  5. Step 5: Solve for x
    x = 16,729,753,206.94/171,641.26
  6. Step 6: Final answer
    x = 97,469.30

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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.