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Finding the Fourth Proportional to 171,745.20, 257,617.80 and 148,125.60

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Solution

The fourth proportional to 171,745.20, 257,617.80 and 148,125.60 is: 222,188.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,745.20 : 257,617.80 = 148,125.60 : x
  2. Step 2: Convert to fraction form
    171,745.20/257,617.80 = 148,125.60/x
  3. Step 3: Cross multiply
    171,745.20x = 257,617.80 × 148,125.60
  4. Step 4: Simplify right side
    171,745.20x = 38,159,791,195.68
  5. Step 5: Solve for x
    x = 38,159,791,195.68/171,745.20
  6. Step 6: Final answer
    x = 222,188.40

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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.