Home / 126,131.76-189,194.64-31,362.21

Finding the Fourth Proportional to 126,131.76, 189,194.64 and 31,362.21

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Solution

The fourth proportional to 126,131.76, 189,194.64 and 31,362.21 is: 47,042.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,131.76 : 189,194.64 = 31,362.21 : x
  2. Step 2: Convert to fraction form
    126,131.76/189,194.64 = 31,362.21/x
  3. Step 3: Cross multiply
    126,131.76x = 189,194.64 × 31,362.21
  4. Step 4: Simplify right side
    126,131.76x = 5,933,562,030.55
  5. Step 5: Solve for x
    x = 5,933,562,030.55/126,131.76
  6. Step 6: Final answer
    x = 47,042.57

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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.