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Finding the Fourth Proportional to 205,187.60, 307,635.60 and 92,921.60

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Solution

The fourth proportional to 205,187.60, 307,635.60 and 92,921.60 is: 139,316.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,187.60 : 307,635.60 = 92,921.60 : x
  2. Step 2: Convert to fraction form
    205,187.60/307,635.60 = 92,921.60/x
  3. Step 3: Cross multiply
    205,187.60x = 307,635.60 × 92,921.60
  4. Step 4: Simplify right side
    205,187.60x = 28,585,992,168.96
  5. Step 5: Solve for x
    x = 28,585,992,168.96/205,187.60
  6. Step 6: Final answer
    x = 139,316.37

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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.