Home / 149,396.03-206,161.29-81,411.62

Finding the Fourth Proportional to 149,396.03, 206,161.29 and 81,411.62

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Solution

The fourth proportional to 149,396.03, 206,161.29 and 81,411.62 is: 112,345.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,396.03 : 206,161.29 = 81,411.62 : x
  2. Step 2: Convert to fraction form
    149,396.03/206,161.29 = 81,411.62/x
  3. Step 3: Cross multiply
    149,396.03x = 206,161.29 × 81,411.62
  4. Step 4: Simplify right side
    149,396.03x = 16,783,924,600.19
  5. Step 5: Solve for x
    x = 16,783,924,600.19/149,396.03
  6. Step 6: Final answer
    x = 112,345.18

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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.