Home / 127,186.40-175,517.91-79,467.43

Finding the Fourth Proportional to 127,186.40, 175,517.91 and 79,467.43

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Solution

The fourth proportional to 127,186.40, 175,517.91 and 79,467.43 is: 109,665.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,186.40 : 175,517.91 = 79,467.43 : x
  2. Step 2: Convert to fraction form
    127,186.40/175,517.91 = 79,467.43/x
  3. Step 3: Cross multiply
    127,186.40x = 175,517.91 × 79,467.43
  4. Step 4: Simplify right side
    127,186.40x = 13,947,956,349.08
  5. Step 5: Solve for x
    x = 13,947,956,349.08/127,186.40
  6. Step 6: Final answer
    x = 109,665.47

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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.