Home / 107,825.80-161,760.30-90,416.20

Finding the Fourth Proportional to 107,825.80, 161,760.30 and 90,416.20

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Solution

The fourth proportional to 107,825.80, 161,760.30 and 90,416.20 is: 135,642.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,825.80 : 161,760.30 = 90,416.20 : x
  2. Step 2: Convert to fraction form
    107,825.80/161,760.30 = 90,416.20/x
  3. Step 3: Cross multiply
    107,825.80x = 161,760.30 × 90,416.20
  4. Step 4: Simplify right side
    107,825.80x = 14,625,751,636.86
  5. Step 5: Solve for x
    x = 14,625,751,636.86/107,825.80
  6. Step 6: Final answer
    x = 135,642.41

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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.