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Finding the Fourth Proportional to 192,082.16, 287,426 and 138,880.64

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Solution

The fourth proportional to 192,082.16, 287,426 and 138,880.64 is: 207,816.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,082.16 : 287,426 = 138,880.64 : x
  2. Step 2: Convert to fraction form
    192,082.16/287,426 = 138,880.64/x
  3. Step 3: Cross multiply
    192,082.16x = 287,426 × 138,880.64
  4. Step 4: Simplify right side
    192,082.16x = 39,917,906,832.64
  5. Step 5: Solve for x
    x = 39,917,906,832.64/192,082.16
  6. Step 6: Final answer
    x = 207,816.84

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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.