Home / 123,605.20-185,796.60-121,272.40

Finding the Fourth Proportional to 123,605.20, 185,796.60 and 121,272.40

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Solution

The fourth proportional to 123,605.20, 185,796.60 and 121,272.40 is: 182,290.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,605.20 : 185,796.60 = 121,272.40 : x
  2. Step 2: Convert to fraction form
    123,605.20/185,796.60 = 121,272.40/x
  3. Step 3: Cross multiply
    123,605.20x = 185,796.60 × 121,272.40
  4. Step 4: Simplify right side
    123,605.20x = 22,531,999,593.84
  5. Step 5: Solve for x
    x = 22,531,999,593.84/123,605.20
  6. Step 6: Final answer
    x = 182,290.06

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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.