Home / 138,725,905.20-208,025,872.20-52,435,633.20

Finding the Fourth Proportional to 138,725,905.20, 208,025,872.20 and 52,435,633.20

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Solution

The fourth proportional to 138,725,905.20, 208,025,872.20 and 52,435,633.20 is: 78,629,642.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,725,905.20 : 208,025,872.20 = 52,435,633.20 : x
  2. Step 2: Convert to fraction form
    138,725,905.20/208,025,872.20 = 52,435,633.20/x
  3. Step 3: Cross multiply
    138,725,905.20x = 208,025,872.20 × 52,435,633.20
  4. Step 4: Simplify right side
    138,725,905.20x = 10,907,968,330,789,278
  5. Step 5: Solve for x
    x = 10,907,968,330,789,278/138,725,905.20
  6. Step 6: Final answer
    x = 78,629,642.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.