Home / 136,988,796.92-205,451,751.70-81,672,284.20

Finding the Fourth Proportional to 136,988,796.92, 205,451,751.70 and 81,672,284.20

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Solution

The fourth proportional to 136,988,796.92, 205,451,751.70 and 81,672,284.20 is: 122,489,679.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,988,796.92 : 205,451,751.70 = 81,672,284.20 : x
  2. Step 2: Convert to fraction form
    136,988,796.92/205,451,751.70 = 81,672,284.20/x
  3. Step 3: Cross multiply
    136,988,796.92x = 205,451,751.70 × 81,672,284.20
  4. Step 4: Simplify right side
    136,988,796.92x = 16,779,713,854,230,232
  5. Step 5: Solve for x
    x = 16,779,713,854,230,232/136,988,796.92
  6. Step 6: Final answer
    x = 122,489,679.68

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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.