Home / 91,121.22-136,682.73-31,958.31

Finding the Fourth Proportional to 91,121.22, 136,682.73 and 31,958.31

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Solution

The fourth proportional to 91,121.22, 136,682.73 and 31,958.31 is: 47,937.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,121.22 : 136,682.73 = 31,958.31 : x
  2. Step 2: Convert to fraction form
    91,121.22/136,682.73 = 31,958.31/x
  3. Step 3: Cross multiply
    91,121.22x = 136,682.73 × 31,958.31
  4. Step 4: Simplify right side
    91,121.22x = 4,368,149,056.99
  5. Step 5: Solve for x
    x = 4,368,149,056.99/91,121.22
  6. Step 6: Final answer
    x = 47,937.78

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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.