Home / 126,149.86-174,128.97-75,178.59

Finding the Fourth Proportional to 126,149.86, 174,128.97 and 75,178.59

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Solution

The fourth proportional to 126,149.86, 174,128.97 and 75,178.59 is: 103,771.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,149.86 : 174,128.97 = 75,178.59 : x
  2. Step 2: Convert to fraction form
    126,149.86/174,128.97 = 75,178.59/x
  3. Step 3: Cross multiply
    126,149.86x = 174,128.97 × 75,178.59
  4. Step 4: Simplify right side
    126,149.86x = 13,090,770,442.75
  5. Step 5: Solve for x
    x = 13,090,770,442.75/126,149.86
  6. Step 6: Final answer
    x = 103,771.58

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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.