Home / 123,469.03-170,383.78-72,480.95

Finding the Fourth Proportional to 123,469.03, 170,383.78 and 72,480.95

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Solution

The fourth proportional to 123,469.03, 170,383.78 and 72,480.95 is: 100,021.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,469.03 : 170,383.78 = 72,480.95 : x
  2. Step 2: Convert to fraction form
    123,469.03/170,383.78 = 72,480.95/x
  3. Step 3: Cross multiply
    123,469.03x = 170,383.78 × 72,480.95
  4. Step 4: Simplify right side
    123,469.03x = 12,349,577,967.19
  5. Step 5: Solve for x
    x = 12,349,577,967.19/123,469.03
  6. Step 6: Final answer
    x = 100,021.66

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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.