Home / 185,261.31-255,660.68-100,378.37

Finding the Fourth Proportional to 185,261.31, 255,660.68 and 100,378.37

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Solution

The fourth proportional to 185,261.31, 255,660.68 and 100,378.37 is: 138,522.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,261.31 : 255,660.68 = 100,378.37 : x
  2. Step 2: Convert to fraction form
    185,261.31/255,660.68 = 100,378.37/x
  3. Step 3: Cross multiply
    185,261.31x = 255,660.68 × 100,378.37
  4. Step 4: Simplify right side
    185,261.31x = 25,662,802,468.75
  5. Step 5: Solve for x
    x = 25,662,802,468.75/185,261.31
  6. Step 6: Final answer
    x = 138,522.19

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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.