Home / 120,218,751,645.18-165,917,182,731.75-72,695,511,783.42

Finding the Fourth Proportional to 120,218,751,645.18, 165,917,182,731.75 and 72,695,511,783.42

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Solution

The fourth proportional to 120,218,751,645.18, 165,917,182,731.75 and 72,695,511,783.42 is: 100,329,061,375.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,218,751,645.18 : 165,917,182,731.75 = 72,695,511,783.42 : x
  2. Step 2: Convert to fraction form
    120,218,751,645.18/165,917,182,731.75 = 72,695,511,783.42/x
  3. Step 3: Cross multiply
    120,218,751,645.18x = 165,917,182,731.75 × 72,695,511,783.42
  4. Step 4: Simplify right side
    120,218,751,645.18x = 12,061,434,512,347,781,660,672
  5. Step 5: Solve for x
    x = 12,061,434,512,347,781,660,672/120,218,751,645.18
  6. Step 6: Final answer
    x = 100,329,061,375.94

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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.