Home / 100,646.12-150,754.24-76,687.40

Finding the Fourth Proportional to 100,646.12, 150,754.24 and 76,687.40

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Solution

The fourth proportional to 100,646.12, 150,754.24 and 76,687.40 is: 114,867.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,646.12 : 150,754.24 = 76,687.40 : x
  2. Step 2: Convert to fraction form
    100,646.12/150,754.24 = 76,687.40/x
  3. Step 3: Cross multiply
    100,646.12x = 150,754.24 × 76,687.40
  4. Step 4: Simplify right side
    100,646.12x = 11,560,950,704.58
  5. Step 5: Solve for x
    x = 11,560,950,704.58/100,646.12
  6. Step 6: Final answer
    x = 114,867.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.