Home / 138,940,213.82-191,737,791.70-76,216,827.59

Finding the Fourth Proportional to 138,940,213.82, 191,737,791.70 and 76,216,827.59

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Solution

The fourth proportional to 138,940,213.82, 191,737,791.70 and 76,216,827.59 is: 105,179,384.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,940,213.82 : 191,737,791.70 = 76,216,827.59 : x
  2. Step 2: Convert to fraction form
    138,940,213.82/191,737,791.70 = 76,216,827.59/x
  3. Step 3: Cross multiply
    138,940,213.82x = 191,737,791.70 × 76,216,827.59
  4. Step 4: Simplify right side
    138,940,213.82x = 14,613,646,212,056,018
  5. Step 5: Solve for x
    x = 14,613,646,212,056,018/138,940,213.82
  6. Step 6: Final answer
    x = 105,179,384.79

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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.