Home / 236,167.12-325,901-128,734.80

Finding the Fourth Proportional to 236,167.12, 325,901 and 128,734.80

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Solution

The fourth proportional to 236,167.12, 325,901 and 128,734.80 is: 177,648.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,167.12 : 325,901 = 128,734.80 : x
  2. Step 2: Convert to fraction form
    236,167.12/325,901 = 128,734.80/x
  3. Step 3: Cross multiply
    236,167.12x = 325,901 × 128,734.80
  4. Step 4: Simplify right side
    236,167.12x = 41,954,800,054.80
  5. Step 5: Solve for x
    x = 41,954,800,054.80/236,167.12
  6. Step 6: Final answer
    x = 177,648.78

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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.