Home / 109,942.20-164,913.30-99,772.65

Finding the Fourth Proportional to 109,942.20, 164,913.30 and 99,772.65

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Solution

The fourth proportional to 109,942.20, 164,913.30 and 99,772.65 is: 149,658.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,942.20 : 164,913.30 = 99,772.65 : x
  2. Step 2: Convert to fraction form
    109,942.20/164,913.30 = 99,772.65/x
  3. Step 3: Cross multiply
    109,942.20x = 164,913.30 × 99,772.65
  4. Step 4: Simplify right side
    109,942.20x = 16,453,836,961.25
  5. Step 5: Solve for x
    x = 16,453,836,961.25/109,942.20
  6. Step 6: Final answer
    x = 149,658.98

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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.