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Finding the Fourth Proportional to 192,915.30, 288,984.15 and 109,712.10

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Solution

The fourth proportional to 192,915.30, 288,984.15 and 109,712.10 is: 164,347.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,915.30 : 288,984.15 = 109,712.10 : x
  2. Step 2: Convert to fraction form
    192,915.30/288,984.15 = 109,712.10/x
  3. Step 3: Cross multiply
    192,915.30x = 288,984.15 × 109,712.10
  4. Step 4: Simplify right side
    192,915.30x = 31,705,057,963.22
  5. Step 5: Solve for x
    x = 31,705,057,963.22/192,915.30
  6. Step 6: Final answer
    x = 164,347.04

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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.