Home / 149,751.20-206,665.01-81,774.48

Finding the Fourth Proportional to 149,751.20, 206,665.01 and 81,774.48

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Solution

The fourth proportional to 149,751.20, 206,665.01 and 81,774.48 is: 112,853.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,751.20 : 206,665.01 = 81,774.48 : x
  2. Step 2: Convert to fraction form
    149,751.20/206,665.01 = 81,774.48/x
  3. Step 3: Cross multiply
    149,751.20x = 206,665.01 × 81,774.48
  4. Step 4: Simplify right side
    149,751.20x = 16,899,923,318.07
  5. Step 5: Solve for x
    x = 16,899,923,318.07/149,751.20
  6. Step 6: Final answer
    x = 112,853.35

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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.