Home / 139,638.20-192,701.56-75,976.48

Finding the Fourth Proportional to 139,638.20, 192,701.56 and 75,976.48

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Solution

The fourth proportional to 139,638.20, 192,701.56 and 75,976.48 is: 104,848.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,638.20 : 192,701.56 = 75,976.48 : x
  2. Step 2: Convert to fraction form
    139,638.20/192,701.56 = 75,976.48/x
  3. Step 3: Cross multiply
    139,638.20x = 192,701.56 × 75,976.48
  4. Step 4: Simplify right side
    139,638.20x = 14,640,786,219.31
  5. Step 5: Solve for x
    x = 14,640,786,219.31/139,638.20
  6. Step 6: Final answer
    x = 104,848.00

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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.