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Finding the Fourth Proportional to 171,877.91, 257,647.30 and 72,066.47

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Solution

The fourth proportional to 171,877.91, 257,647.30 and 72,066.47 is: 108,028.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,877.91 : 257,647.30 = 72,066.47 : x
  2. Step 2: Convert to fraction form
    171,877.91/257,647.30 = 72,066.47/x
  3. Step 3: Cross multiply
    171,877.91x = 257,647.30 × 72,066.47
  4. Step 4: Simplify right side
    171,877.91x = 18,567,729,947.63
  5. Step 5: Solve for x
    x = 18,567,729,947.63/171,877.91
  6. Step 6: Final answer
    x = 108,028.60

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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.