Home / 138,361,231.82-190,938,884.74-75,638,087.70

Finding the Fourth Proportional to 138,361,231.82, 190,938,884.74 and 75,638,087.70

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Solution

The fourth proportional to 138,361,231.82, 190,938,884.74 and 75,638,087.70 is: 104,380,771.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,361,231.82 : 190,938,884.74 = 75,638,087.70 : x
  2. Step 2: Convert to fraction form
    138,361,231.82/190,938,884.74 = 75,638,087.70/x
  3. Step 3: Cross multiply
    138,361,231.82x = 190,938,884.74 × 75,638,087.70
  4. Step 4: Simplify right side
    138,361,231.82x = 14,442,252,109,304,312
  5. Step 5: Solve for x
    x = 14,442,252,109,304,312/138,361,231.82
  6. Step 6: Final answer
    x = 104,380,771.40

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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.