Home / 149,291.06-206,018.55-81,309.20

Finding the Fourth Proportional to 149,291.06, 206,018.55 and 81,309.20

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Solution

The fourth proportional to 149,291.06, 206,018.55 and 81,309.20 is: 112,205.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,291.06 : 206,018.55 = 81,309.20 : x
  2. Step 2: Convert to fraction form
    149,291.06/206,018.55 = 81,309.20/x
  3. Step 3: Cross multiply
    149,291.06x = 206,018.55 × 81,309.20
  4. Step 4: Simplify right side
    149,291.06x = 16,751,202,455.57
  5. Step 5: Solve for x
    x = 16,751,202,455.57/149,291.06
  6. Step 6: Final answer
    x = 112,205.00

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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.