Home / 149,039.64-205,675.56-81,057.42

Finding the Fourth Proportional to 149,039.64, 205,675.56 and 81,057.42

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Solution

The fourth proportional to 149,039.64, 205,675.56 and 81,057.42 is: 111,859.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,039.64 : 205,675.56 = 81,057.42 : x
  2. Step 2: Convert to fraction form
    149,039.64/205,675.56 = 81,057.42/x
  3. Step 3: Cross multiply
    149,039.64x = 205,675.56 × 81,057.42
  4. Step 4: Simplify right side
    149,039.64x = 16,671,530,250.66
  5. Step 5: Solve for x
    x = 16,671,530,250.66/149,039.64
  6. Step 6: Final answer
    x = 111,859.71

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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.