Home / 123,493.26-170,420.87-66,904.64

Finding the Fourth Proportional to 123,493.26, 170,420.87 and 66,904.64

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Solution

The fourth proportional to 123,493.26, 170,420.87 and 66,904.64 is: 92,328.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,493.26 : 170,420.87 = 66,904.64 : x
  2. Step 2: Convert to fraction form
    123,493.26/170,420.87 = 66,904.64/x
  3. Step 3: Cross multiply
    123,493.26x = 170,420.87 × 66,904.64
  4. Step 4: Simplify right side
    123,493.26x = 11,401,945,769.21
  5. Step 5: Solve for x
    x = 11,401,945,769.21/123,493.26
  6. Step 6: Final answer
    x = 92,328.49

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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.