Home / 123,239.56-170,069.82-66,650.80

Finding the Fourth Proportional to 123,239.56, 170,069.82 and 66,650.80

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Solution

The fourth proportional to 123,239.56, 170,069.82 and 66,650.80 is: 91,977.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,239.56 : 170,069.82 = 66,650.80 : x
  2. Step 2: Convert to fraction form
    123,239.56/170,069.82 = 66,650.80/x
  3. Step 3: Cross multiply
    123,239.56x = 170,069.82 × 66,650.80
  4. Step 4: Simplify right side
    123,239.56x = 11,335,289,558.86
  5. Step 5: Solve for x
    x = 11,335,289,558.86/123,239.56
  6. Step 6: Final answer
    x = 91,977.69

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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.