Home / 149,629.90-206,460.97-89,206.12

Finding the Fourth Proportional to 149,629.90, 206,460.97 and 89,206.12

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Solution

The fourth proportional to 149,629.90, 206,460.97 and 89,206.12 is: 123,087.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,629.90 : 206,460.97 = 89,206.12 : x
  2. Step 2: Convert to fraction form
    149,629.90/206,460.97 = 89,206.12/x
  3. Step 3: Cross multiply
    149,629.90x = 206,460.97 × 89,206.12
  4. Step 4: Simplify right side
    149,629.90x = 18,417,582,065.14
  5. Step 5: Solve for x
    x = 18,417,582,065.14/149,629.90
  6. Step 6: Final answer
    x = 123,087.58

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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.