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Finding the Fourth Proportional to 171,879.03, 257,825.53 and 81,875.47

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Solution

The fourth proportional to 171,879.03, 257,825.53 and 81,875.47 is: 122,816.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,879.03 : 257,825.53 = 81,875.47 : x
  2. Step 2: Convert to fraction form
    171,879.03/257,825.53 = 81,875.47/x
  3. Step 3: Cross multiply
    171,879.03x = 257,825.53 × 81,875.47
  4. Step 4: Simplify right side
    171,879.03x = 21,109,586,446.75
  5. Step 5: Solve for x
    x = 21,109,586,446.75/171,879.03
  6. Step 6: Final answer
    x = 122,816.53

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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.