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Finding the Fourth Proportional to 123,237, 170,067.12 and 66,648.36

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Solution

The fourth proportional to 123,237, 170,067.12 and 66,648.36 is: 91,974.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,237 : 170,067.12 = 66,648.36 : x
  2. Step 2: Convert to fraction form
    123,237/170,067.12 = 66,648.36/x
  3. Step 3: Cross multiply
    123,237x = 170,067.12 × 66,648.36
  4. Step 4: Simplify right side
    123,237x = 11,334,694,637.92
  5. Step 5: Solve for x
    x = 11,334,694,637.92/123,237
  6. Step 6: Final answer
    x = 91,974.77

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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.