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Finding the Fourth Proportional to 123,795.75, 170,877.03 and 79,083.75

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Solution

The fourth proportional to 123,795.75, 170,877.03 and 79,083.75 is: 109,160.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,795.75 : 170,877.03 = 79,083.75 : x
  2. Step 2: Convert to fraction form
    123,795.75/170,877.03 = 79,083.75/x
  3. Step 3: Cross multiply
    123,795.75x = 170,877.03 × 79,083.75
  4. Step 4: Simplify right side
    123,795.75x = 13,513,596,321.26
  5. Step 5: Solve for x
    x = 13,513,596,321.26/123,795.75
  6. Step 6: Final answer
    x = 109,160.42

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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.