Home / 149,236,785.45-205,944,004.62-81,342,489.24

Finding the Fourth Proportional to 149,236,785.45, 205,944,004.62 and 81,342,489.24

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Solution

The fourth proportional to 149,236,785.45, 205,944,004.62 and 81,342,489.24 is: 112,251,131.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,236,785.45 : 205,944,004.62 = 81,342,489.24 : x
  2. Step 2: Convert to fraction form
    149,236,785.45/205,944,004.62 = 81,342,489.24/x
  3. Step 3: Cross multiply
    149,236,785.45x = 205,944,004.62 × 81,342,489.24
  4. Step 4: Simplify right side
    149,236,785.45x = 16,751,997,979,844,860
  5. Step 5: Solve for x
    x = 16,751,997,979,844,860/149,236,785.45
  6. Step 6: Final answer
    x = 112,251,131.18

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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.