Home / 456,721.20-685,081.80-119,761.20

Finding the Fourth Proportional to 456,721.20, 685,081.80 and 119,761.20

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Solution

The fourth proportional to 456,721.20, 685,081.80 and 119,761.20 is: 179,641.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,721.20 : 685,081.80 = 119,761.20 : x
  2. Step 2: Convert to fraction form
    456,721.20/685,081.80 = 119,761.20/x
  3. Step 3: Cross multiply
    456,721.20x = 685,081.80 × 119,761.20
  4. Step 4: Simplify right side
    456,721.20x = 82,046,218,466.16
  5. Step 5: Solve for x
    x = 82,046,218,466.16/456,721.20
  6. Step 6: Final answer
    x = 179,641.80

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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.