Home / 91,399.88-126,103.14-51,108.20

Finding the Fourth Proportional to 91,399.88, 126,103.14 and 51,108.20

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Solution

The fourth proportional to 91,399.88, 126,103.14 and 51,108.20 is: 70,513.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,399.88 : 126,103.14 = 51,108.20 : x
  2. Step 2: Convert to fraction form
    91,399.88/126,103.14 = 51,108.20/x
  3. Step 3: Cross multiply
    91,399.88x = 126,103.14 × 51,108.20
  4. Step 4: Simplify right side
    91,399.88x = 6,444,904,499.75
  5. Step 5: Solve for x
    x = 6,444,904,499.75/91,399.88
  6. Step 6: Final answer
    x = 70,513.27

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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.