Home / 123,927.86-171,021.78-67,339.23

Finding the Fourth Proportional to 123,927.86, 171,021.78 and 67,339.23

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Solution

The fourth proportional to 123,927.86, 171,021.78 and 67,339.23 is: 92,928.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,927.86 : 171,021.78 = 67,339.23 : x
  2. Step 2: Convert to fraction form
    123,927.86/171,021.78 = 67,339.23/x
  3. Step 3: Cross multiply
    123,927.86x = 171,021.78 × 67,339.23
  4. Step 4: Simplify right side
    123,927.86x = 11,516,474,978.43
  5. Step 5: Solve for x
    x = 11,516,474,978.43/123,927.86
  6. Step 6: Final answer
    x = 92,928.87

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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.