Home / 122,290.44-168,785.01-79,323.18

Finding the Fourth Proportional to 122,290.44, 168,785.01 and 79,323.18

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Solution

The fourth proportional to 122,290.44, 168,785.01 and 79,323.18 is: 109,481.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,290.44 : 168,785.01 = 79,323.18 : x
  2. Step 2: Convert to fraction form
    122,290.44/168,785.01 = 79,323.18/x
  3. Step 3: Cross multiply
    122,290.44x = 168,785.01 × 79,323.18
  4. Step 4: Simplify right side
    122,290.44x = 13,388,563,729.53
  5. Step 5: Solve for x
    x = 13,388,563,729.53/122,290.44
  6. Step 6: Final answer
    x = 109,481.69

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1.5x scale

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.