Home / 107,396.55-148,108.37-72,992.75

Finding the Fourth Proportional to 107,396.55, 148,108.37 and 72,992.75

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Solution

The fourth proportional to 107,396.55, 148,108.37 and 72,992.75 is: 100,662.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,396.55 : 148,108.37 = 72,992.75 : x
  2. Step 2: Convert to fraction form
    107,396.55/148,108.37 = 72,992.75/x
  3. Step 3: Cross multiply
    107,396.55x = 148,108.37 × 72,992.75
  4. Step 4: Simplify right side
    107,396.55x = 10,810,836,118.81
  5. Step 5: Solve for x
    x = 10,810,836,118.81/107,396.55
  6. Step 6: Final answer
    x = 100,662.79

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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.