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Finding the Fourth Proportional to 139,469.61, 192,560.75 and 107,146.66

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Solution

The fourth proportional to 139,469.61, 192,560.75 and 107,146.66 is: 147,933.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,469.61 : 192,560.75 = 107,146.66 : x
  2. Step 2: Convert to fraction form
    139,469.61/192,560.75 = 107,146.66/x
  3. Step 3: Cross multiply
    139,469.61x = 192,560.75 × 107,146.66
  4. Step 4: Simplify right side
    139,469.61x = 20,632,241,209.60
  5. Step 5: Solve for x
    x = 20,632,241,209.60/139,469.61
  6. Step 6: Final answer
    x = 147,933.60

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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.