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Finding the Fourth Proportional to 109,560.70, 164,049.45 and 69,903.10

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Solution

The fourth proportional to 109,560.70, 164,049.45 and 69,903.10 is: 104,668.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,560.70 : 164,049.45 = 69,903.10 : x
  2. Step 2: Convert to fraction form
    109,560.70/164,049.45 = 69,903.10/x
  3. Step 3: Cross multiply
    109,560.70x = 164,049.45 × 69,903.10
  4. Step 4: Simplify right side
    109,560.70x = 11,467,565,108.30
  5. Step 5: Solve for x
    x = 11,467,565,108.30/109,560.70
  6. Step 6: Final answer
    x = 104,668.60

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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.