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Finding the Fourth Proportional to 123,194.65, 170,008.60 and 66,606.03

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Solution

The fourth proportional to 123,194.65, 170,008.60 and 66,606.03 is: 91,916.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,194.65 : 170,008.60 = 66,606.03 : x
  2. Step 2: Convert to fraction form
    123,194.65/170,008.60 = 66,606.03/x
  3. Step 3: Cross multiply
    123,194.65x = 170,008.60 × 66,606.03
  4. Step 4: Simplify right side
    123,194.65x = 11,323,597,911.86
  5. Step 5: Solve for x
    x = 11,323,597,911.86/123,194.65
  6. Step 6: Final answer
    x = 91,916.31

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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.