Home / 123,976.42-171,088.08-67,387.78

Finding the Fourth Proportional to 123,976.42, 171,088.08 and 67,387.78

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Solution

The fourth proportional to 123,976.42, 171,088.08 and 67,387.78 is: 92,995.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,976.42 : 171,088.08 = 67,387.78 : x
  2. Step 2: Convert to fraction form
    123,976.42/171,088.08 = 67,387.78/x
  3. Step 3: Cross multiply
    123,976.42x = 171,088.08 × 67,387.78
  4. Step 4: Simplify right side
    123,976.42x = 11,529,245,895.66
  5. Step 5: Solve for x
    x = 11,529,245,895.66/123,976.42
  6. Step 6: Final answer
    x = 92,995.47

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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.