Home / 138,007,512.48-190,511,580.24-89,138,773.92

Finding the Fourth Proportional to 138,007,512.48, 190,511,580.24 and 89,138,773.92

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Solution

The fourth proportional to 138,007,512.48, 190,511,580.24 and 89,138,773.92 is: 123,051,045.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,007,512.48 : 190,511,580.24 = 89,138,773.92 : x
  2. Step 2: Convert to fraction form
    138,007,512.48/190,511,580.24 = 89,138,773.92/x
  3. Step 3: Cross multiply
    138,007,512.48x = 190,511,580.24 × 89,138,773.92
  4. Step 4: Simplify right side
    138,007,512.48x = 16,981,968,680,155,300
  5. Step 5: Solve for x
    x = 16,981,968,680,155,300/138,007,512.48
  6. Step 6: Final answer
    x = 123,051,045.37

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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.