Home / 126,680.19-189,641.67-76,608.82

Finding the Fourth Proportional to 126,680.19, 189,641.67 and 76,608.82

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Solution

The fourth proportional to 126,680.19, 189,641.67 and 76,608.82 is: 114,684.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,680.19 : 189,641.67 = 76,608.82 : x
  2. Step 2: Convert to fraction form
    126,680.19/189,641.67 = 76,608.82/x
  3. Step 3: Cross multiply
    126,680.19x = 189,641.67 × 76,608.82
  4. Step 4: Simplify right side
    126,680.19x = 14,528,224,561.53
  5. Step 5: Solve for x
    x = 14,528,224,561.53/126,680.19
  6. Step 6: Final answer
    x = 114,684.27

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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.