Home / 120,218,751,649.68-165,917,182,737.96-72,695,511,787.92

Finding the Fourth Proportional to 120,218,751,649.68, 165,917,182,737.96 and 72,695,511,787.92

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Solution

The fourth proportional to 120,218,751,649.68, 165,917,182,737.96 and 72,695,511,787.92 is: 100,329,061,382.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,218,751,649.68 : 165,917,182,737.96 = 72,695,511,787.92 : x
  2. Step 2: Convert to fraction form
    120,218,751,649.68/165,917,182,737.96 = 72,695,511,787.92/x
  3. Step 3: Cross multiply
    120,218,751,649.68x = 165,917,182,737.96 × 72,695,511,787.92
  4. Step 4: Simplify right side
    120,218,751,649.68x = 12,061,434,513,545,846,849,536
  5. Step 5: Solve for x
    x = 12,061,434,513,545,846,849,536/120,218,751,649.68
  6. Step 6: Final answer
    x = 100,329,061,382.15

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1.5x scale

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.