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Finding the Fourth Proportional to 148,887.25, 205,461.84 and 80,905.30

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Solution

The fourth proportional to 148,887.25, 205,461.84 and 80,905.30 is: 111,647.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,887.25 : 205,461.84 = 80,905.30 : x
  2. Step 2: Convert to fraction form
    148,887.25/205,461.84 = 80,905.30/x
  3. Step 3: Cross multiply
    148,887.25x = 205,461.84 × 80,905.30
  4. Step 4: Simplify right side
    148,887.25x = 16,622,951,803.75
  5. Step 5: Solve for x
    x = 16,622,951,803.75/148,887.25
  6. Step 6: Final answer
    x = 111,647.92

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1.5x scale

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.