Home / 123,071.09-184,991.99-81,220.12

Finding the Fourth Proportional to 123,071.09, 184,991.99 and 81,220.12

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Solution

The fourth proportional to 123,071.09, 184,991.99 and 81,220.12 is: 122,084.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,071.09 : 184,991.99 = 81,220.12 : x
  2. Step 2: Convert to fraction form
    123,071.09/184,991.99 = 81,220.12/x
  3. Step 3: Cross multiply
    123,071.09x = 184,991.99 × 81,220.12
  4. Step 4: Simplify right side
    123,071.09x = 15,025,070,295.78
  5. Step 5: Solve for x
    x = 15,025,070,295.78/123,071.09
  6. Step 6: Final answer
    x = 122,084.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.