Home / 122,972.66-169,780.62-100,365.58

Finding the Fourth Proportional to 122,972.66, 169,780.62 and 100,365.58

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Solution

The fourth proportional to 122,972.66, 169,780.62 and 100,365.58 is: 138,568.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,972.66 : 169,780.62 = 100,365.58 : x
  2. Step 2: Convert to fraction form
    122,972.66/169,780.62 = 100,365.58/x
  3. Step 3: Cross multiply
    122,972.66x = 169,780.62 × 100,365.58
  4. Step 4: Simplify right side
    122,972.66x = 17,040,129,048.33
  5. Step 5: Solve for x
    x = 17,040,129,048.33/122,972.66
  6. Step 6: Final answer
    x = 138,568.44

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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.