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Finding the Fourth Proportional to 192,173.64, 288,270.96 and 79,865.16

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Solution

The fourth proportional to 192,173.64, 288,270.96 and 79,865.16 is: 119,802.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,173.64 : 288,270.96 = 79,865.16 : x
  2. Step 2: Convert to fraction form
    192,173.64/288,270.96 = 79,865.16/x
  3. Step 3: Cross multiply
    192,173.64x = 288,270.96 × 79,865.16
  4. Step 4: Simplify right side
    192,173.64x = 23,022,806,343.75
  5. Step 5: Solve for x
    x = 23,022,806,343.75/192,173.64
  6. Step 6: Final answer
    x = 119,802.10

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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.