Home / 149,923.90-206,894.50-81,940.87

Finding the Fourth Proportional to 149,923.90, 206,894.50 and 81,940.87

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Solution

The fourth proportional to 149,923.90, 206,894.50 and 81,940.87 is: 113,078.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,923.90 : 206,894.50 = 81,940.87 : x
  2. Step 2: Convert to fraction form
    149,923.90/206,894.50 = 81,940.87/x
  3. Step 3: Cross multiply
    149,923.90x = 206,894.50 × 81,940.87
  4. Step 4: Simplify right side
    149,923.90x = 16,953,114,918.51
  5. Step 5: Solve for x
    x = 16,953,114,918.51/149,923.90
  6. Step 6: Final answer
    x = 113,078.13

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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.