Home / 126,725.64-189,920.31-105,706.86

Finding the Fourth Proportional to 126,725.64, 189,920.31 and 105,706.86

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Solution

The fourth proportional to 126,725.64, 189,920.31 and 105,706.86 is: 158,420.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,725.64 : 189,920.31 = 105,706.86 : x
  2. Step 2: Convert to fraction form
    126,725.64/189,920.31 = 105,706.86/x
  3. Step 3: Cross multiply
    126,725.64x = 189,920.31 × 105,706.86
  4. Step 4: Simplify right side
    126,725.64x = 20,075,879,620.33
  5. Step 5: Solve for x
    x = 20,075,879,620.33/126,725.64
  6. Step 6: Final answer
    x = 158,420.03

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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.