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Finding the Fourth Proportional to 139,496.80, 192,507.48 and 75,835.96

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Solution

The fourth proportional to 139,496.80, 192,507.48 and 75,835.96 is: 104,654.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,496.80 : 192,507.48 = 75,835.96 : x
  2. Step 2: Convert to fraction form
    139,496.80/192,507.48 = 75,835.96/x
  3. Step 3: Cross multiply
    139,496.80x = 192,507.48 × 75,835.96
  4. Step 4: Simplify right side
    139,496.80x = 14,598,989,552.98
  5. Step 5: Solve for x
    x = 14,598,989,552.98/139,496.80
  6. Step 6: Final answer
    x = 104,654.66

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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.