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Finding the Fourth Proportional to 148,892.83, 205,471.95 and 80,909.64

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Solution

The fourth proportional to 148,892.83, 205,471.95 and 80,909.64 is: 111,655.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,892.83 : 205,471.95 = 80,909.64 : x
  2. Step 2: Convert to fraction form
    148,892.83/205,471.95 = 80,909.64/x
  3. Step 3: Cross multiply
    148,892.83x = 205,471.95 × 80,909.64
  4. Step 4: Simplify right side
    148,892.83x = 16,624,661,504.60
  5. Step 5: Solve for x
    x = 16,624,661,504.60/148,892.83
  6. Step 6: Final answer
    x = 111,655.22

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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.