Home / 120,722,461.92-166,553,791.92-81,039,771.36

Finding the Fourth Proportional to 120,722,461.92, 166,553,791.92 and 81,039,771.36

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Solution

The fourth proportional to 120,722,461.92, 166,553,791.92 and 81,039,771.36 is: 111,805,881.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,722,461.92 : 166,553,791.92 = 81,039,771.36 : x
  2. Step 2: Convert to fraction form
    120,722,461.92/166,553,791.92 = 81,039,771.36/x
  3. Step 3: Cross multiply
    120,722,461.92x = 166,553,791.92 × 81,039,771.36
  4. Step 4: Simplify right side
    120,722,461.92x = 13,497,481,216,337,814
  5. Step 5: Solve for x
    x = 13,497,481,216,337,814/120,722,461.92
  6. Step 6: Final answer
    x = 111,805,881.04

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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.