Home / 135,999.41-202,632.20-128,359.79

Finding the Fourth Proportional to 135,999.41, 202,632.20 and 128,359.79

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Solution

The fourth proportional to 135,999.41, 202,632.20 and 128,359.79 is: 191,249.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,999.41 : 202,632.20 = 128,359.79 : x
  2. Step 2: Convert to fraction form
    135,999.41/202,632.20 = 128,359.79/x
  3. Step 3: Cross multiply
    135,999.41x = 202,632.20 × 128,359.79
  4. Step 4: Simplify right side
    135,999.41x = 26,009,824,984.28
  5. Step 5: Solve for x
    x = 26,009,824,984.28/135,999.41
  6. Step 6: Final answer
    x = 191,249.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.