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Finding the Fourth Proportional to 123,364, 170,242.32 and 66,775.38

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Solution

The fourth proportional to 123,364, 170,242.32 and 66,775.38 is: 92,150.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,364 : 170,242.32 = 66,775.38 : x
  2. Step 2: Convert to fraction form
    123,364/170,242.32 = 66,775.38/x
  3. Step 3: Cross multiply
    123,364x = 170,242.32 × 66,775.38
  4. Step 4: Simplify right side
    123,364x = 11,367,995,610.08
  5. Step 5: Solve for x
    x = 11,367,995,610.08/123,364
  6. Step 6: Final answer
    x = 92,150.02

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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.