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Finding the Fourth Proportional to 171,824.80, 257,737.20 and 72,097.60

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Solution

The fourth proportional to 171,824.80, 257,737.20 and 72,097.60 is: 108,146.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,824.80 : 257,737.20 = 72,097.60 : x
  2. Step 2: Convert to fraction form
    171,824.80/257,737.20 = 72,097.60/x
  3. Step 3: Cross multiply
    171,824.80x = 257,737.20 × 72,097.60
  4. Step 4: Simplify right side
    171,824.80x = 18,582,233,550.72
  5. Step 5: Solve for x
    x = 18,582,233,550.72/171,824.80
  6. Step 6: Final answer
    x = 108,146.40

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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.