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Finding the Fourth Proportional to 109,222.20, 164,006.10 and 79,846.20

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Solution

The fourth proportional to 109,222.20, 164,006.10 and 79,846.20 is: 119,895.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,222.20 : 164,006.10 = 79,846.20 : x
  2. Step 2: Convert to fraction form
    109,222.20/164,006.10 = 79,846.20/x
  3. Step 3: Cross multiply
    109,222.20x = 164,006.10 × 79,846.20
  4. Step 4: Simplify right side
    109,222.20x = 13,095,263,861.82
  5. Step 5: Solve for x
    x = 13,095,263,861.82/109,222.20
  6. Step 6: Final answer
    x = 119,895.62

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1.5x scale

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.