Home / 149,080.49-205,734.83-81,101.28

Finding the Fourth Proportional to 149,080.49, 205,734.83 and 81,101.28

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Solution

The fourth proportional to 149,080.49, 205,734.83 and 81,101.28 is: 111,921.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,080.49 : 205,734.83 = 81,101.28 : x
  2. Step 2: Convert to fraction form
    149,080.49/205,734.83 = 81,101.28/x
  3. Step 3: Cross multiply
    149,080.49x = 205,734.83 × 81,101.28
  4. Step 4: Simplify right side
    149,080.49x = 16,685,357,648.08
  5. Step 5: Solve for x
    x = 16,685,357,648.08/149,080.49
  6. Step 6: Final answer
    x = 111,921.81

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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.