Home / 138,361,228.31-190,938,879.91-75,638,084.21

Finding the Fourth Proportional to 138,361,228.31, 190,938,879.91 and 75,638,084.21

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Solution

The fourth proportional to 138,361,228.31, 190,938,879.91 and 75,638,084.21 is: 104,380,766.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,361,228.31 : 190,938,879.91 = 75,638,084.21 : x
  2. Step 2: Convert to fraction form
    138,361,228.31/190,938,879.91 = 75,638,084.21/x
  3. Step 3: Cross multiply
    138,361,228.31x = 190,938,879.91 × 75,638,084.21
  4. Step 4: Simplify right side
    138,361,228.31x = 14,442,251,077,451,530
  5. Step 5: Solve for x
    x = 14,442,251,077,451,530/138,361,228.31
  6. Step 6: Final answer
    x = 104,380,766.59

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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.