Home / 120,851.23-166,770.03-67,139.64

Finding the Fourth Proportional to 120,851.23, 166,770.03 and 67,139.64

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Solution

The fourth proportional to 120,851.23, 166,770.03 and 67,139.64 is: 92,650.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,851.23 : 166,770.03 = 67,139.64 : x
  2. Step 2: Convert to fraction form
    120,851.23/166,770.03 = 67,139.64/x
  3. Step 3: Cross multiply
    120,851.23x = 166,770.03 × 67,139.64
  4. Step 4: Simplify right side
    120,851.23x = 11,196,879,776.99
  5. Step 5: Solve for x
    x = 11,196,879,776.99/120,851.23
  6. Step 6: Final answer
    x = 92,650.11

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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.