Home / 127,135.76-175,481.39-79,360.34

Finding the Fourth Proportional to 127,135.76, 175,481.39 and 79,360.34

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Solution

The fourth proportional to 127,135.76, 175,481.39 and 79,360.34 is: 109,538.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,135.76 : 175,481.39 = 79,360.34 : x
  2. Step 2: Convert to fraction form
    127,135.76/175,481.39 = 79,360.34/x
  3. Step 3: Cross multiply
    127,135.76x = 175,481.39 × 79,360.34
  4. Step 4: Simplify right side
    127,135.76x = 13,926,262,774.07
  5. Step 5: Solve for x
    x = 13,926,262,774.07/127,135.76
  6. Step 6: Final answer
    x = 109,538.52

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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.