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Finding the Fourth Proportional to 123,253.48, 170,089.79 and 66,664.85

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Solution

The fourth proportional to 123,253.48, 170,089.79 and 66,664.85 is: 91,997.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,253.48 : 170,089.79 = 66,664.85 : x
  2. Step 2: Convert to fraction form
    123,253.48/170,089.79 = 66,664.85/x
  3. Step 3: Cross multiply
    123,253.48x = 170,089.79 × 66,664.85
  4. Step 4: Simplify right side
    123,253.48x = 11,339,010,336.88
  5. Step 5: Solve for x
    x = 11,339,010,336.88/123,253.48
  6. Step 6: Final answer
    x = 91,997.49

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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.