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Finding the Fourth Proportional to 171,660.20, 257,417.40 and 82,940.90

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Solution

The fourth proportional to 171,660.20, 257,417.40 and 82,940.90 is: 124,376.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,660.20 : 257,417.40 = 82,940.90 : x
  2. Step 2: Convert to fraction form
    171,660.20/257,417.40 = 82,940.90/x
  3. Step 3: Cross multiply
    171,660.20x = 257,417.40 × 82,940.90
  4. Step 4: Simplify right side
    171,660.20x = 21,350,430,831.66
  5. Step 5: Solve for x
    x = 21,350,430,831.66/171,660.20
  6. Step 6: Final answer
    x = 124,376.13

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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.