Home / 123,213.36-170,002.22-72,198.75

Finding the Fourth Proportional to 123,213.36, 170,002.22 and 72,198.75

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Solution

The fourth proportional to 123,213.36, 170,002.22 and 72,198.75 is: 99,615.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,213.36 : 170,002.22 = 72,198.75 : x
  2. Step 2: Convert to fraction form
    123,213.36/170,002.22 = 72,198.75/x
  3. Step 3: Cross multiply
    123,213.36x = 170,002.22 × 72,198.75
  4. Step 4: Simplify right side
    123,213.36x = 12,273,947,781.23
  5. Step 5: Solve for x
    x = 12,273,947,781.23/123,213.36
  6. Step 6: Final answer
    x = 99,615.40

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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.