Home / 149,965.45-206,952.75-81,983.23

Finding the Fourth Proportional to 149,965.45, 206,952.75 and 81,983.23

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Solution

The fourth proportional to 149,965.45, 206,952.75 and 81,983.23 is: 113,137.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,965.45 : 206,952.75 = 81,983.23 : x
  2. Step 2: Convert to fraction form
    149,965.45/206,952.75 = 81,983.23/x
  3. Step 3: Cross multiply
    149,965.45x = 206,952.75 × 81,983.23
  4. Step 4: Simplify right side
    149,965.45x = 16,966,654,902.38
  5. Step 5: Solve for x
    x = 16,966,654,902.38/149,965.45
  6. Step 6: Final answer
    x = 113,137.09

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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.