Home / 123,213.87-170,002.91-72,199.26

Finding the Fourth Proportional to 123,213.87, 170,002.91 and 72,199.26

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Solution

The fourth proportional to 123,213.87, 170,002.91 and 72,199.26 is: 99,616.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,213.87 : 170,002.91 = 72,199.26 : x
  2. Step 2: Convert to fraction form
    123,213.87/170,002.91 = 72,199.26/x
  3. Step 3: Cross multiply
    123,213.87x = 170,002.91 × 72,199.26
  4. Step 4: Simplify right side
    123,213.87x = 12,274,083,938.85
  5. Step 5: Solve for x
    x = 12,274,083,938.85/123,213.87
  6. Step 6: Final answer
    x = 99,616.09

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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.