Home / 149,386.62-206,151.66-81,406.56

Finding the Fourth Proportional to 149,386.62, 206,151.66 and 81,406.56

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Solution

The fourth proportional to 149,386.62, 206,151.66 and 81,406.56 is: 112,340.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,386.62 : 206,151.66 = 81,406.56 : x
  2. Step 2: Convert to fraction form
    149,386.62/206,151.66 = 81,406.56/x
  3. Step 3: Cross multiply
    149,386.62x = 206,151.66 × 81,406.56
  4. Step 4: Simplify right side
    149,386.62x = 16,782,097,478.89
  5. Step 5: Solve for x
    x = 16,782,097,478.89/149,386.62
  6. Step 6: Final answer
    x = 112,340.03

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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.