Home / 127,380.33-175,739.96-76,409.60

Finding the Fourth Proportional to 127,380.33, 175,739.96 and 76,409.60

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Solution

The fourth proportional to 127,380.33, 175,739.96 and 76,409.60 is: 105,418.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,380.33 : 175,739.96 = 76,409.60 : x
  2. Step 2: Convert to fraction form
    127,380.33/175,739.96 = 76,409.60/x
  3. Step 3: Cross multiply
    127,380.33x = 175,739.96 × 76,409.60
  4. Step 4: Simplify right side
    127,380.33x = 13,428,219,359.94
  5. Step 5: Solve for x
    x = 13,428,219,359.94/127,380.33
  6. Step 6: Final answer
    x = 105,418.31

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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.