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Finding the Fourth Proportional to 192,406.72, 288,612 and 67,748.80

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Solution

The fourth proportional to 192,406.72, 288,612 and 67,748.80 is: 101,623.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,406.72 : 288,612 = 67,748.80 : x
  2. Step 2: Convert to fraction form
    192,406.72/288,612 = 67,748.80/x
  3. Step 3: Cross multiply
    192,406.72x = 288,612 × 67,748.80
  4. Step 4: Simplify right side
    192,406.72x = 19,553,116,665.60
  5. Step 5: Solve for x
    x = 19,553,116,665.60/192,406.72
  6. Step 6: Final answer
    x = 101,623.88

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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.