Home / 149,966.45-206,954.13-81,984.23

Finding the Fourth Proportional to 149,966.45, 206,954.13 and 81,984.23

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Solution

The fourth proportional to 149,966.45, 206,954.13 and 81,984.23 is: 113,138.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,966.45 : 206,954.13 = 81,984.23 : x
  2. Step 2: Convert to fraction form
    149,966.45/206,954.13 = 81,984.23/x
  3. Step 3: Cross multiply
    149,966.45x = 206,954.13 × 81,984.23
  4. Step 4: Simplify right side
    149,966.45x = 16,966,974,993.37
  5. Step 5: Solve for x
    x = 16,966,974,993.37/149,966.45
  6. Step 6: Final answer
    x = 113,138.47

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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.