Home / 171,945.20-257,917.80-108,959.60

Finding the Fourth Proportional to 171,945.20, 257,917.80 and 108,959.60

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Solution

The fourth proportional to 171,945.20, 257,917.80 and 108,959.60 is: 163,439.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,945.20 : 257,917.80 = 108,959.60 : x
  2. Step 2: Convert to fraction form
    171,945.20/257,917.80 = 108,959.60/x
  3. Step 3: Cross multiply
    171,945.20x = 257,917.80 × 108,959.60
  4. Step 4: Simplify right side
    171,945.20x = 28,102,620,320.88
  5. Step 5: Solve for x
    x = 28,102,620,320.88/171,945.20
  6. Step 6: Final answer
    x = 163,439.40

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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.