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Finding the Fourth Proportional to 123,554.75, 170,505.54 and 66,966.12

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Solution

The fourth proportional to 123,554.75, 170,505.54 and 66,966.12 is: 92,413.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,554.75 : 170,505.54 = 66,966.12 : x
  2. Step 2: Convert to fraction form
    123,554.75/170,505.54 = 66,966.12/x
  3. Step 3: Cross multiply
    123,554.75x = 170,505.54 × 66,966.12
  4. Step 4: Simplify right side
    123,554.75x = 11,418,094,452.30
  5. Step 5: Solve for x
    x = 11,418,094,452.30/123,554.75
  6. Step 6: Final answer
    x = 92,413.24

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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.