Home / 126,355.19-189,469.38-42,085.71

Finding the Fourth Proportional to 126,355.19, 189,469.38 and 42,085.71

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Solution

The fourth proportional to 126,355.19, 189,469.38 and 42,085.71 is: 63,107.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,355.19 : 189,469.38 = 42,085.71 : x
  2. Step 2: Convert to fraction form
    126,355.19/189,469.38 = 42,085.71/x
  3. Step 3: Cross multiply
    126,355.19x = 189,469.38 × 42,085.71
  4. Step 4: Simplify right side
    126,355.19x = 7,973,953,380.56
  5. Step 5: Solve for x
    x = 7,973,953,380.56/126,355.19
  6. Step 6: Final answer
    x = 63,107.45

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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.