Home / 100,203.05-138,282.29-54,882.93

Finding the Fourth Proportional to 100,203.05, 138,282.29 and 54,882.93

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Solution

The fourth proportional to 100,203.05, 138,282.29 and 54,882.93 is: 75,739.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,203.05 : 138,282.29 = 54,882.93 : x
  2. Step 2: Convert to fraction form
    100,203.05/138,282.29 = 54,882.93/x
  3. Step 3: Cross multiply
    100,203.05x = 138,282.29 × 54,882.93
  4. Step 4: Simplify right side
    100,203.05x = 7,589,336,967.90
  5. Step 5: Solve for x
    x = 7,589,336,967.90/100,203.05
  6. Step 6: Final answer
    x = 75,739.58

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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.