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Finding the Fourth Proportional to 123,335.65, 170,203.21 and 66,747.03

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Solution

The fourth proportional to 123,335.65, 170,203.21 and 66,747.03 is: 92,110.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,335.65 : 170,203.21 = 66,747.03 : x
  2. Step 2: Convert to fraction form
    123,335.65/170,203.21 = 66,747.03/x
  3. Step 3: Cross multiply
    123,335.65x = 170,203.21 × 66,747.03
  4. Step 4: Simplify right side
    123,335.65x = 11,360,557,958.84
  5. Step 5: Solve for x
    x = 11,360,557,958.84/123,335.65
  6. Step 6: Final answer
    x = 92,110.90

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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.