Home / 149,928.40-206,900.70-81,945.38

Finding the Fourth Proportional to 149,928.40, 206,900.70 and 81,945.38

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Solution

The fourth proportional to 149,928.40, 206,900.70 and 81,945.38 is: 113,084.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,928.40 : 206,900.70 = 81,945.38 : x
  2. Step 2: Convert to fraction form
    149,928.40/206,900.70 = 81,945.38/x
  3. Step 3: Cross multiply
    149,928.40x = 206,900.70 × 81,945.38
  4. Step 4: Simplify right side
    149,928.40x = 16,954,556,483.77
  5. Step 5: Solve for x
    x = 16,954,556,483.77/149,928.40
  6. Step 6: Final answer
    x = 113,084.36

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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.