Home / 120,372,764.72-166,165,265.88-81,267,509.79

Finding the Fourth Proportional to 120,372,764.72, 166,165,265.88 and 81,267,509.79

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Solution

The fourth proportional to 120,372,764.72, 166,165,265.88 and 81,267,509.79 is: 112,183,494.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,372,764.72 : 166,165,265.88 = 81,267,509.79 : x
  2. Step 2: Convert to fraction form
    120,372,764.72/166,165,265.88 = 81,267,509.79/x
  3. Step 3: Cross multiply
    120,372,764.72x = 166,165,265.88 × 81,267,509.79
  4. Step 4: Simplify right side
    120,372,764.72x = 13,503,837,371,660,854
  5. Step 5: Solve for x
    x = 13,503,837,371,660,854/120,372,764.72
  6. Step 6: Final answer
    x = 112,183,494.36

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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.