Home / 120,372,765.72-166,165,267.26-81,267,510.79

Finding the Fourth Proportional to 120,372,765.72, 166,165,267.26 and 81,267,510.79

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Solution

The fourth proportional to 120,372,765.72, 166,165,267.26 and 81,267,510.79 is: 112,183,495.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,372,765.72 : 166,165,267.26 = 81,267,510.79 : x
  2. Step 2: Convert to fraction form
    120,372,765.72/166,165,267.26 = 81,267,510.79/x
  3. Step 3: Cross multiply
    120,372,765.72x = 166,165,267.26 × 81,267,510.79
  4. Step 4: Simplify right side
    120,372,765.72x = 13,503,837,649,975,284
  5. Step 5: Solve for x
    x = 13,503,837,649,975,284/120,372,765.72
  6. Step 6: Final answer
    x = 112,183,495.74

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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.