Home / 171,601.20-257,138.64-77,997.60

Finding the Fourth Proportional to 171,601.20, 257,138.64 and 77,997.60

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Solution

The fourth proportional to 171,601.20, 257,138.64 and 77,997.60 is: 116,876.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,601.20 : 257,138.64 = 77,997.60 : x
  2. Step 2: Convert to fraction form
    171,601.20/257,138.64 = 77,997.60/x
  3. Step 3: Cross multiply
    171,601.20x = 257,138.64 × 77,997.60
  4. Step 4: Simplify right side
    171,601.20x = 20,056,196,787.26
  5. Step 5: Solve for x
    x = 20,056,196,787.26/171,601.20
  6. Step 6: Final answer
    x = 116,876.79

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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.