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Finding the Fourth Proportional to 204,134.40, 306,055.80 and 91,722.60

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Solution

The fourth proportional to 204,134.40, 306,055.80 and 91,722.60 is: 137,518.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,134.40 : 306,055.80 = 91,722.60 : x
  2. Step 2: Convert to fraction form
    204,134.40/306,055.80 = 91,722.60/x
  3. Step 3: Cross multiply
    204,134.40x = 306,055.80 × 91,722.60
  4. Step 4: Simplify right side
    204,134.40x = 28,072,233,721.08
  5. Step 5: Solve for x
    x = 28,072,233,721.08/204,134.40
  6. Step 6: Final answer
    x = 137,518.39

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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.