Home / 123,731.10-170,749.38-67,142.48

Finding the Fourth Proportional to 123,731.10, 170,749.38 and 67,142.48

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Solution

The fourth proportional to 123,731.10, 170,749.38 and 67,142.48 is: 92,656.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,731.10 : 170,749.38 = 67,142.48 : x
  2. Step 2: Convert to fraction form
    123,731.10/170,749.38 = 67,142.48/x
  3. Step 3: Cross multiply
    123,731.10x = 170,749.38 × 67,142.48
  4. Step 4: Simplify right side
    123,731.10x = 11,464,536,831.66
  5. Step 5: Solve for x
    x = 11,464,536,831.66/123,731.10
  6. Step 6: Final answer
    x = 92,656.87

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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.