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Finding the Fourth Proportional to 148,080, 204,353.28 and 81,013.44

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Solution

The fourth proportional to 148,080, 204,353.28 and 81,013.44 is: 111,800.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,080 : 204,353.28 = 81,013.44 : x
  2. Step 2: Convert to fraction form
    148,080/204,353.28 = 81,013.44/x
  3. Step 3: Cross multiply
    148,080x = 204,353.28 × 81,013.44
  4. Step 4: Simplify right side
    148,080x = 16,555,362,188.08
  5. Step 5: Solve for x
    x = 16,555,362,188.08/148,080
  6. Step 6: Final answer
    x = 111,800.12

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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.