Home / 149,749.74-206,653.04-81,766.50

Finding the Fourth Proportional to 149,749.74, 206,653.04 and 81,766.50

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Solution

The fourth proportional to 149,749.74, 206,653.04 and 81,766.50 is: 112,836.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,749.74 : 206,653.04 = 81,766.50 : x
  2. Step 2: Convert to fraction form
    149,749.74/206,653.04 = 81,766.50/x
  3. Step 3: Cross multiply
    149,749.74x = 206,653.04 × 81,766.50
  4. Step 4: Simplify right side
    149,749.74x = 16,897,295,795.16
  5. Step 5: Solve for x
    x = 16,897,295,795.16/149,749.74
  6. Step 6: Final answer
    x = 112,836.90

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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.