Home / 127,346.09-175,633.31-78,914.36

Finding the Fourth Proportional to 127,346.09, 175,633.31 and 78,914.36

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Solution

The fourth proportional to 127,346.09, 175,633.31 and 78,914.36 is: 108,837.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,346.09 : 175,633.31 = 78,914.36 : x
  2. Step 2: Convert to fraction form
    127,346.09/175,633.31 = 78,914.36/x
  3. Step 3: Cross multiply
    127,346.09x = 175,633.31 × 78,914.36
  4. Step 4: Simplify right side
    127,346.09x = 13,859,990,889.70
  5. Step 5: Solve for x
    x = 13,859,990,889.70/127,346.09
  6. Step 6: Final answer
    x = 108,837.20

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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.