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Finding the Fourth Proportional to 171,940.90, 257,911.35 and 132,574.90

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Solution

The fourth proportional to 171,940.90, 257,911.35 and 132,574.90 is: 198,862.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,940.90 : 257,911.35 = 132,574.90 : x
  2. Step 2: Convert to fraction form
    171,940.90/257,911.35 = 132,574.90/x
  3. Step 3: Cross multiply
    171,940.90x = 257,911.35 × 132,574.90
  4. Step 4: Simplify right side
    171,940.90x = 34,192,571,435.12
  5. Step 5: Solve for x
    x = 34,192,571,435.12/171,940.90
  6. Step 6: Final answer
    x = 198,862.35

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1.5x scale

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.