Home / 126,860.78-174,901.92-109,146.08

Finding the Fourth Proportional to 126,860.78, 174,901.92 and 109,146.08

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Solution

The fourth proportional to 126,860.78, 174,901.92 and 109,146.08 is: 150,478.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,860.78 : 174,901.92 = 109,146.08 : x
  2. Step 2: Convert to fraction form
    126,860.78/174,901.92 = 109,146.08/x
  3. Step 3: Cross multiply
    126,860.78x = 174,901.92 × 109,146.08
  4. Step 4: Simplify right side
    126,860.78x = 19,089,858,952.47
  5. Step 5: Solve for x
    x = 19,089,858,952.47/126,860.78
  6. Step 6: Final answer
    x = 150,478.81

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1.5x scale

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.