Home / 123,945.36-171,046.44-67,356.78

Finding the Fourth Proportional to 123,945.36, 171,046.44 and 67,356.78

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Solution

The fourth proportional to 123,945.36, 171,046.44 and 67,356.78 is: 92,953.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,945.36 : 171,046.44 = 67,356.78 : x
  2. Step 2: Convert to fraction form
    123,945.36/171,046.44 = 67,356.78/x
  3. Step 3: Cross multiply
    123,945.36x = 171,046.44 × 67,356.78
  4. Step 4: Simplify right side
    123,945.36x = 11,521,137,428.86
  5. Step 5: Solve for x
    x = 11,521,137,428.86/123,945.36
  6. Step 6: Final answer
    x = 92,953.36

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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.