Home / 235,845.12-325,467.05-128,415.80

Finding the Fourth Proportional to 235,845.12, 325,467.05 and 128,415.80

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Solution

The fourth proportional to 235,845.12, 325,467.05 and 128,415.80 is: 177,214.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,845.12 : 325,467.05 = 128,415.80 : x
  2. Step 2: Convert to fraction form
    235,845.12/325,467.05 = 128,415.80/x
  3. Step 3: Cross multiply
    235,845.12x = 325,467.05 × 128,415.80
  4. Step 4: Simplify right side
    235,845.12x = 41,795,109,940.23
  5. Step 5: Solve for x
    x = 41,795,109,940.23/235,845.12
  6. Step 6: Final answer
    x = 177,214.23

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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.