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Finding the Fourth Proportional to 109,903.60, 164,855.40 and 108,737.20

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Solution

The fourth proportional to 109,903.60, 164,855.40 and 108,737.20 is: 163,105.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,903.60 : 164,855.40 = 108,737.20 : x
  2. Step 2: Convert to fraction form
    109,903.60/164,855.40 = 108,737.20/x
  3. Step 3: Cross multiply
    109,903.60x = 164,855.40 × 108,737.20
  4. Step 4: Simplify right side
    109,903.60x = 17,925,914,600.88
  5. Step 5: Solve for x
    x = 17,925,914,600.88/109,903.60
  6. Step 6: Final answer
    x = 163,105.80

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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.