Home / 126,744.56-189,737.94-76,673.42

Finding the Fourth Proportional to 126,744.56, 189,737.94 and 76,673.42

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Solution

The fourth proportional to 126,744.56, 189,737.94 and 76,673.42 is: 114,780.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,744.56 : 189,737.94 = 76,673.42 : x
  2. Step 2: Convert to fraction form
    126,744.56/189,737.94 = 76,673.42/x
  3. Step 3: Cross multiply
    126,744.56x = 189,737.94 × 76,673.42
  4. Step 4: Simplify right side
    126,744.56x = 14,547,856,763.55
  5. Step 5: Solve for x
    x = 14,547,856,763.55/126,744.56
  6. Step 6: Final answer
    x = 114,780.92

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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.