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Finding the Fourth Proportional to 149,952.60, 206,940.15 and 81,974.09

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Solution

The fourth proportional to 149,952.60, 206,940.15 and 81,974.09 is: 113,127.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,952.60 : 206,940.15 = 81,974.09 : x
  2. Step 2: Convert to fraction form
    149,952.60/206,940.15 = 81,974.09/x
  3. Step 3: Cross multiply
    149,952.60x = 206,940.15 × 81,974.09
  4. Step 4: Simplify right side
    149,952.60x = 16,963,730,998.06
  5. Step 5: Solve for x
    x = 16,963,730,998.06/149,952.60
  6. Step 6: Final answer
    x = 113,127.29

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1.5x scale

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.