Home / 171,939.46-257,917.39-72,102.91

Finding the Fourth Proportional to 171,939.46, 257,917.39 and 72,102.91

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Solution

The fourth proportional to 171,939.46, 257,917.39 and 72,102.91 is: 108,157.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,939.46 : 257,917.39 = 72,102.91 : x
  2. Step 2: Convert to fraction form
    171,939.46/257,917.39 = 72,102.91/x
  3. Step 3: Cross multiply
    171,939.46x = 257,917.39 × 72,102.91
  4. Step 4: Simplify right side
    171,939.46x = 18,596,594,358.60
  5. Step 5: Solve for x
    x = 18,596,594,358.60/171,939.46
  6. Step 6: Final answer
    x = 108,157.80

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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.