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Finding the Fourth Proportional to 218,596.70, 301,664.55 and 123,105.02

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Solution

The fourth proportional to 218,596.70, 301,664.55 and 123,105.02 is: 169,885.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,596.70 : 301,664.55 = 123,105.02 : x
  2. Step 2: Convert to fraction form
    218,596.70/301,664.55 = 123,105.02/x
  3. Step 3: Cross multiply
    218,596.70x = 301,664.55 × 123,105.02
  4. Step 4: Simplify right side
    218,596.70x = 37,136,420,461.04
  5. Step 5: Solve for x
    x = 37,136,420,461.04/218,596.70
  6. Step 6: Final answer
    x = 169,885.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.