Home / 100,144.32-138,199.35-54,825.12

Finding the Fourth Proportional to 100,144.32, 138,199.35 and 54,825.12

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Solution

The fourth proportional to 100,144.32, 138,199.35 and 54,825.12 is: 75,658.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,144.32 : 138,199.35 = 54,825.12 : x
  2. Step 2: Convert to fraction form
    100,144.32/138,199.35 = 54,825.12/x
  3. Step 3: Cross multiply
    100,144.32x = 138,199.35 × 54,825.12
  4. Step 4: Simplify right side
    100,144.32x = 7,576,795,947.67
  5. Step 5: Solve for x
    x = 7,576,795,947.67/100,144.32
  6. Step 6: Final answer
    x = 75,658.77

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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.