Home / 138,287,664.18-190,836,584.82-76,407,561.90

Finding the Fourth Proportional to 138,287,664.18, 190,836,584.82 and 76,407,561.90

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Solution

The fourth proportional to 138,287,664.18, 190,836,584.82 and 76,407,561.90 is: 105,442,218.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,287,664.18 : 190,836,584.82 = 76,407,561.90 : x
  2. Step 2: Convert to fraction form
    138,287,664.18/190,836,584.82 = 76,407,561.90/x
  3. Step 3: Cross multiply
    138,287,664.18x = 190,836,584.82 × 76,407,561.90
  4. Step 4: Simplify right side
    138,287,664.18x = 14,581,358,167,418,750
  5. Step 5: Solve for x
    x = 14,581,358,167,418,750/138,287,664.18
  6. Step 6: Final answer
    x = 105,442,218.97

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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.