Home / 117,869,964.38-162,727,973.32-78,231,249.12

Finding the Fourth Proportional to 117,869,964.38, 162,727,973.32 and 78,231,249.12

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Solution

The fourth proportional to 117,869,964.38, 162,727,973.32 and 78,231,249.12 is: 108,003,872.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,869,964.38 : 162,727,973.32 = 78,231,249.12 : x
  2. Step 2: Convert to fraction form
    117,869,964.38/162,727,973.32 = 78,231,249.12/x
  3. Step 3: Cross multiply
    117,869,964.38x = 162,727,973.32 × 78,231,249.12
  4. Step 4: Simplify right side
    117,869,964.38x = 12,730,412,619,589,634
  5. Step 5: Solve for x
    x = 12,730,412,619,589,634/117,869,964.38
  6. Step 6: Final answer
    x = 108,003,872.63

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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.