Home / 126,680.36-189,641.69-76,608.92

Finding the Fourth Proportional to 126,680.36, 189,641.69 and 76,608.92

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Solution

The fourth proportional to 126,680.36, 189,641.69 and 76,608.92 is: 114,684.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,680.36 : 189,641.69 = 76,608.92 : x
  2. Step 2: Convert to fraction form
    126,680.36/189,641.69 = 76,608.92/x
  3. Step 3: Cross multiply
    126,680.36x = 189,641.69 × 76,608.92
  4. Step 4: Simplify right side
    126,680.36x = 14,528,244,301.19
  5. Step 5: Solve for x
    x = 14,528,244,301.19/126,680.36
  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.