Home / 149,485.68-206,287.74-81,505.44

Finding the Fourth Proportional to 149,485.68, 206,287.74 and 81,505.44

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Solution

The fourth proportional to 149,485.68, 206,287.74 and 81,505.44 is: 112,476.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,485.68 : 206,287.74 = 81,505.44 : x
  2. Step 2: Convert to fraction form
    149,485.68/206,287.74 = 81,505.44/x
  3. Step 3: Cross multiply
    149,485.68x = 206,287.74 × 81,505.44
  4. Step 4: Simplify right side
    149,485.68x = 16,813,573,015.31
  5. Step 5: Solve for x
    x = 16,813,573,015.31/149,485.68
  6. Step 6: Final answer
    x = 112,476.14

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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.