Home / 149,839.98-206,775.75-81,857.25

Finding the Fourth Proportional to 149,839.98, 206,775.75 and 81,857.25

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Solution

The fourth proportional to 149,839.98, 206,775.75 and 81,857.25 is: 112,961.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,839.98 : 206,775.75 = 81,857.25 : x
  2. Step 2: Convert to fraction form
    149,839.98/206,775.75 = 81,857.25/x
  3. Step 3: Cross multiply
    149,839.98x = 206,775.75 × 81,857.25
  4. Step 4: Simplify right side
    149,839.98x = 16,926,094,568.65
  5. Step 5: Solve for x
    x = 16,926,094,568.65/149,839.98
  6. Step 6: Final answer
    x = 112,961.14

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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.