Home / 128,768.37-193,180.25-43,387.71

Finding the Fourth Proportional to 128,768.37, 193,180.25 and 43,387.71

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Solution

The fourth proportional to 128,768.37, 193,180.25 and 43,387.71 is: 65,090.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,768.37 : 193,180.25 = 43,387.71 : x
  2. Step 2: Convert to fraction form
    128,768.37/193,180.25 = 43,387.71/x
  3. Step 3: Cross multiply
    128,768.37x = 193,180.25 × 43,387.71
  4. Step 4: Simplify right side
    128,768.37x = 8,381,648,447.79
  5. Step 5: Solve for x
    x = 8,381,648,447.79/128,768.37
  6. Step 6: Final answer
    x = 65,090.89

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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.