Home / 236,075.20-325,783.78-128,645.20

Finding the Fourth Proportional to 236,075.20, 325,783.78 and 128,645.20

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Solution

The fourth proportional to 236,075.20, 325,783.78 and 128,645.20 is: 177,530.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,075.20 : 325,783.78 = 128,645.20 : x
  2. Step 2: Convert to fraction form
    236,075.20/325,783.78 = 128,645.20/x
  3. Step 3: Cross multiply
    236,075.20x = 325,783.78 × 128,645.20
  4. Step 4: Simplify right side
    236,075.20x = 41,910,519,534.86
  5. Step 5: Solve for x
    x = 41,910,519,534.86/236,075.20
  6. Step 6: Final answer
    x = 177,530.38

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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.