Home / 154,188.60-212,816.22-100,380.36

Finding the Fourth Proportional to 154,188.60, 212,816.22 and 100,380.36

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Solution

The fourth proportional to 154,188.60, 212,816.22 and 100,380.36 is: 138,548.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,188.60 : 212,816.22 = 100,380.36 : x
  2. Step 2: Convert to fraction form
    154,188.60/212,816.22 = 100,380.36/x
  3. Step 3: Cross multiply
    154,188.60x = 212,816.22 × 100,380.36
  4. Step 4: Simplify right side
    154,188.60x = 21,362,568,777.44
  5. Step 5: Solve for x
    x = 21,362,568,777.44/154,188.60
  6. Step 6: Final answer
    x = 138,548.30

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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.