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Finding the Fourth Proportional to 128,241.70, 192,362.56 and 34,747.45

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Solution

The fourth proportional to 128,241.70, 192,362.56 and 34,747.45 is: 52,121.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,241.70 : 192,362.56 = 34,747.45 : x
  2. Step 2: Convert to fraction form
    128,241.70/192,362.56 = 34,747.45/x
  3. Step 3: Cross multiply
    128,241.70x = 192,362.56 × 34,747.45
  4. Step 4: Simplify right side
    128,241.70x = 6,684,107,867.70
  5. Step 5: Solve for x
    x = 6,684,107,867.70/128,241.70
  6. Step 6: Final answer
    x = 52,121.17

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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.