Home / 149,384.21-206,147.52-81,401.76

Finding the Fourth Proportional to 149,384.21, 206,147.52 and 81,401.76

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Solution

The fourth proportional to 149,384.21, 206,147.52 and 81,401.76 is: 112,332.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,384.21 : 206,147.52 = 81,401.76 : x
  2. Step 2: Convert to fraction form
    149,384.21/206,147.52 = 81,401.76/x
  3. Step 3: Cross multiply
    149,384.21x = 206,147.52 × 81,401.76
  4. Step 4: Simplify right side
    149,384.21x = 16,780,770,947.64
  5. Step 5: Solve for x
    x = 16,780,770,947.64/149,384.21
  6. Step 6: Final answer
    x = 112,332.97

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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.