Home / 121,029,718.77-166,998,169.13-72,141,695.73

Finding the Fourth Proportional to 121,029,718.77, 166,998,169.13 and 72,141,695.73

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Solution

The fourth proportional to 121,029,718.77, 166,998,169.13 and 72,141,695.73 is: 99,541,924.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,029,718.77 : 166,998,169.13 = 72,141,695.73 : x
  2. Step 2: Convert to fraction form
    121,029,718.77/166,998,169.13 = 72,141,695.73/x
  3. Step 3: Cross multiply
    121,029,718.77x = 166,998,169.13 × 72,141,695.73
  4. Step 4: Simplify right side
    121,029,718.77x = 12,047,531,104,482,832
  5. Step 5: Solve for x
    x = 12,047,531,104,482,832/121,029,718.77
  6. Step 6: Final answer
    x = 99,541,924.31

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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.