Home / 123,200.25-169,984.22-72,185.57

Finding the Fourth Proportional to 123,200.25, 169,984.22 and 72,185.57

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Solution

The fourth proportional to 123,200.25, 169,984.22 and 72,185.57 is: 99,597.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,200.25 : 169,984.22 = 72,185.57 : x
  2. Step 2: Convert to fraction form
    123,200.25/169,984.22 = 72,185.57/x
  3. Step 3: Cross multiply
    123,200.25x = 169,984.22 × 72,185.57
  4. Step 4: Simplify right side
    123,200.25x = 12,270,408,293.79
  5. Step 5: Solve for x
    x = 12,270,408,293.79/123,200.25
  6. Step 6: Final answer
    x = 99,597.27

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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.