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Finding the Fourth Proportional to 99,548.80, 149,553.60 and 68,444.80

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Solution

The fourth proportional to 99,548.80, 149,553.60 and 68,444.80 is: 102,825.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,548.80 : 149,553.60 = 68,444.80 : x
  2. Step 2: Convert to fraction form
    99,548.80/149,553.60 = 68,444.80/x
  3. Step 3: Cross multiply
    99,548.80x = 149,553.60 × 68,444.80
  4. Step 4: Simplify right side
    99,548.80x = 10,236,166,241.28
  5. Step 5: Solve for x
    x = 10,236,166,241.28/99,548.80
  6. Step 6: Final answer
    x = 102,825.61

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1.5x scale

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.