Home / 107,632.40-161,448.60-84,278.80

Finding the Fourth Proportional to 107,632.40, 161,448.60 and 84,278.80

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Solution

The fourth proportional to 107,632.40, 161,448.60 and 84,278.80 is: 126,418.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,632.40 : 161,448.60 = 84,278.80 : x
  2. Step 2: Convert to fraction form
    107,632.40/161,448.60 = 84,278.80/x
  3. Step 3: Cross multiply
    107,632.40x = 161,448.60 × 84,278.80
  4. Step 4: Simplify right side
    107,632.40x = 13,606,694,269.68
  5. Step 5: Solve for x
    x = 13,606,694,269.68/107,632.40
  6. Step 6: Final answer
    x = 126,418.20

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1.5x scale

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.