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Finding the Fourth Proportional to 109,664.70, 164,497.05 and 107,915.10

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Solution

The fourth proportional to 109,664.70, 164,497.05 and 107,915.10 is: 161,872.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,664.70 : 164,497.05 = 107,915.10 : x
  2. Step 2: Convert to fraction form
    109,664.70/164,497.05 = 107,915.10/x
  3. Step 3: Cross multiply
    109,664.70x = 164,497.05 × 107,915.10
  4. Step 4: Simplify right side
    109,664.70x = 17,751,715,600.46
  5. Step 5: Solve for x
    x = 17,751,715,600.46/109,664.70
  6. Step 6: Final answer
    x = 161,872.65

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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.