Home / 120,372,751.32-166,165,247.42-81,267,496.40

Finding the Fourth Proportional to 120,372,751.32, 166,165,247.42 and 81,267,496.40

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Solution

The fourth proportional to 120,372,751.32, 166,165,247.42 and 81,267,496.40 is: 112,183,475.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,372,751.32 : 166,165,247.42 = 81,267,496.40 : x
  2. Step 2: Convert to fraction form
    120,372,751.32/166,165,247.42 = 81,267,496.40/x
  3. Step 3: Cross multiply
    120,372,751.32x = 166,165,247.42 × 81,267,496.40
  4. Step 4: Simplify right side
    120,372,751.32x = 13,503,833,645,272,794
  5. Step 5: Solve for x
    x = 13,503,833,645,272,794/120,372,751.32
  6. Step 6: Final answer
    x = 112,183,475.89

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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.