Home / 171,869.20-257,816.08-71,928.80

Finding the Fourth Proportional to 171,869.20, 257,816.08 and 71,928.80

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Solution

The fourth proportional to 171,869.20, 257,816.08 and 71,928.80 is: 107,898.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,869.20 : 257,816.08 = 71,928.80 : x
  2. Step 2: Convert to fraction form
    171,869.20/257,816.08 = 71,928.80/x
  3. Step 3: Cross multiply
    171,869.20x = 257,816.08 × 71,928.80
  4. Step 4: Simplify right side
    171,869.20x = 18,544,401,255.10
  5. Step 5: Solve for x
    x = 18,544,401,255.10/171,869.20
  6. Step 6: Final answer
    x = 107,898.34

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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.