Home / 123,736.10-170,756.28-67,147.48

Finding the Fourth Proportional to 123,736.10, 170,756.28 and 67,147.48

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Solution

The fourth proportional to 123,736.10, 170,756.28 and 67,147.48 is: 92,663.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,736.10 : 170,756.28 = 67,147.48 : x
  2. Step 2: Convert to fraction form
    123,736.10/170,756.28 = 67,147.48/x
  3. Step 3: Cross multiply
    123,736.10x = 170,756.28 × 67,147.48
  4. Step 4: Simplify right side
    123,736.10x = 11,465,853,896.17
  5. Step 5: Solve for x
    x = 11,465,853,896.17/123,736.10
  6. Step 6: Final answer
    x = 92,663.77

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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.