Home / 126,159.74-189,025.38-76,134.72

Finding the Fourth Proportional to 126,159.74, 189,025.38 and 76,134.72

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Solution

The fourth proportional to 126,159.74, 189,025.38 and 76,134.72 is: 114,072.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,159.74 : 189,025.38 = 76,134.72 : x
  2. Step 2: Convert to fraction form
    126,159.74/189,025.38 = 76,134.72/x
  3. Step 3: Cross multiply
    126,159.74x = 189,025.38 × 76,134.72
  4. Step 4: Simplify right side
    126,159.74x = 14,391,394,379.19
  5. Step 5: Solve for x
    x = 14,391,394,379.19/126,159.74
  6. Step 6: Final answer
    x = 114,072.80

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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.