Home / 138,179,335.32-190,618,608.78-82,385,406.36

Finding the Fourth Proportional to 138,179,335.32, 190,618,608.78 and 82,385,406.36

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Solution

The fourth proportional to 138,179,335.32, 190,618,608.78 and 82,385,406.36 is: 113,650,796.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,179,335.32 : 190,618,608.78 = 82,385,406.36 : x
  2. Step 2: Convert to fraction form
    138,179,335.32/190,618,608.78 = 82,385,406.36/x
  3. Step 3: Cross multiply
    138,179,335.32x = 190,618,608.78 × 82,385,406.36
  4. Step 4: Simplify right side
    138,179,335.32x = 15,704,191,544,118,164
  5. Step 5: Solve for x
    x = 15,704,191,544,118,164/138,179,335.32
  6. Step 6: Final answer
    x = 113,650,796.68

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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.