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Finding the Fourth Proportional to 171,946.80, 257,920.20 and 72,073.80

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Solution

The fourth proportional to 171,946.80, 257,920.20 and 72,073.80 is: 108,110.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,946.80 : 257,920.20 = 72,073.80 : x
  2. Step 2: Convert to fraction form
    171,946.80/257,920.20 = 72,073.80/x
  3. Step 3: Cross multiply
    171,946.80x = 257,920.20 × 72,073.80
  4. Step 4: Simplify right side
    171,946.80x = 18,589,288,910.76
  5. Step 5: Solve for x
    x = 18,589,288,910.76/171,946.80
  6. Step 6: Final answer
    x = 108,110.70

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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.