Home / 171,609.20-257,150.64-78,005.60

Finding the Fourth Proportional to 171,609.20, 257,150.64 and 78,005.60

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Solution

The fourth proportional to 171,609.20, 257,150.64 and 78,005.60 is: 116,888.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,609.20 : 257,150.64 = 78,005.60 : x
  2. Step 2: Convert to fraction form
    171,609.20/257,150.64 = 78,005.60/x
  3. Step 3: Cross multiply
    171,609.20x = 257,150.64 × 78,005.60
  4. Step 4: Simplify right side
    171,609.20x = 20,059,189,963.58
  5. Step 5: Solve for x
    x = 20,059,189,963.58/171,609.20
  6. Step 6: Final answer
    x = 116,888.78

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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.