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Finding the Fourth Proportional to 123,240.99, 170,072.57 and 66,652.37

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Solution

The fourth proportional to 123,240.99, 170,072.57 and 66,652.37 is: 91,980.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,240.99 : 170,072.57 = 66,652.37 : x
  2. Step 2: Convert to fraction form
    123,240.99/170,072.57 = 66,652.37/x
  3. Step 3: Cross multiply
    123,240.99x = 170,072.57 × 66,652.37
  4. Step 4: Simplify right side
    123,240.99x = 11,335,739,353.99
  5. Step 5: Solve for x
    x = 11,335,739,353.99/123,240.99
  6. Step 6: Final answer
    x = 91,980.27

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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.