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Finding the Fourth Proportional to 123,611.97, 170,563.36 and 69,895.80

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Solution

The fourth proportional to 123,611.97, 170,563.36 and 69,895.80 is: 96,444.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,611.97 : 170,563.36 = 69,895.80 : x
  2. Step 2: Convert to fraction form
    123,611.97/170,563.36 = 69,895.80/x
  3. Step 3: Cross multiply
    123,611.97x = 170,563.36 × 69,895.80
  4. Step 4: Simplify right side
    123,611.97x = 11,921,662,497.89
  5. Step 5: Solve for x
    x = 11,921,662,497.89/123,611.97
  6. Step 6: Final answer
    x = 96,444.24

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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.