Home / 123,286.50-170,136.60-66,699.09

Finding the Fourth Proportional to 123,286.50, 170,136.60 and 66,699.09

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Solution

The fourth proportional to 123,286.50, 170,136.60 and 66,699.09 is: 92,045.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,286.50 : 170,136.60 = 66,699.09 : x
  2. Step 2: Convert to fraction form
    123,286.50/170,136.60 = 66,699.09/x
  3. Step 3: Cross multiply
    123,286.50x = 170,136.60 × 66,699.09
  4. Step 4: Simplify right side
    123,286.50x = 11,347,956,395.69
  5. Step 5: Solve for x
    x = 11,347,956,395.69/123,286.50
  6. Step 6: Final answer
    x = 92,045.41

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1.5x scale

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.