Home / 123,329.39-170,195.40-72,372.29

Finding the Fourth Proportional to 123,329.39, 170,195.40 and 72,372.29

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Solution

The fourth proportional to 123,329.39, 170,195.40 and 72,372.29 is: 99,874.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,329.39 : 170,195.40 = 72,372.29 : x
  2. Step 2: Convert to fraction form
    123,329.39/170,195.40 = 72,372.29/x
  3. Step 3: Cross multiply
    123,329.39x = 170,195.40 × 72,372.29
  4. Step 4: Simplify right side
    123,329.39x = 12,317,431,270.95
  5. Step 5: Solve for x
    x = 12,317,431,270.95/123,329.39
  6. Step 6: Final answer
    x = 99,874.26

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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.