Home / 100,203.29-138,282.62-54,883.18

Finding the Fourth Proportional to 100,203.29, 138,282.62 and 54,883.18

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Solution

The fourth proportional to 100,203.29, 138,282.62 and 54,883.18 is: 75,739.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,203.29 : 138,282.62 = 54,883.18 : x
  2. Step 2: Convert to fraction form
    100,203.29/138,282.62 = 54,883.18/x
  3. Step 3: Cross multiply
    100,203.29x = 138,282.62 × 54,883.18
  4. Step 4: Simplify right side
    100,203.29x = 7,589,389,924.33
  5. Step 5: Solve for x
    x = 7,589,389,924.33/100,203.29
  6. Step 6: Final answer
    x = 75,739.93

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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.