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Finding the Fourth Proportional to 139,775.80, 192,864.34 and 82,433.19

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Solution

The fourth proportional to 139,775.80, 192,864.34 and 82,433.19 is: 113,742.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,775.80 : 192,864.34 = 82,433.19 : x
  2. Step 2: Convert to fraction form
    139,775.80/192,864.34 = 82,433.19/x
  3. Step 3: Cross multiply
    139,775.80x = 192,864.34 × 82,433.19
  4. Step 4: Simplify right side
    139,775.80x = 15,898,422,783.44
  5. Step 5: Solve for x
    x = 15,898,422,783.44/139,775.80
  6. Step 6: Final answer
    x = 113,742.31

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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.