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Finding the Fourth Proportional to 126,161.68, 174,111.72 and 73,169.68

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Solution

The fourth proportional to 126,161.68, 174,111.72 and 73,169.68 is: 100,979.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,161.68 : 174,111.72 = 73,169.68 : x
  2. Step 2: Convert to fraction form
    126,161.68/174,111.72 = 73,169.68/x
  3. Step 3: Cross multiply
    126,161.68x = 174,111.72 × 73,169.68
  4. Step 4: Simplify right side
    126,161.68x = 12,739,698,836.65
  5. Step 5: Solve for x
    x = 12,739,698,836.65/126,161.68
  6. Step 6: Final answer
    x = 100,979.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.