Home / 220,260.22-330,376.95-78,112.54

Finding the Fourth Proportional to 220,260.22, 330,376.95 and 78,112.54

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Solution

The fourth proportional to 220,260.22, 330,376.95 and 78,112.54 is: 117,164.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,260.22 : 330,376.95 = 78,112.54 : x
  2. Step 2: Convert to fraction form
    220,260.22/330,376.95 = 78,112.54/x
  3. Step 3: Cross multiply
    220,260.22x = 330,376.95 × 78,112.54
  4. Step 4: Simplify right side
    220,260.22x = 25,806,582,721.95
  5. Step 5: Solve for x
    x = 25,806,582,721.95/220,260.22
  6. Step 6: Final answer
    x = 117,164.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.