Home / 128,801.60-193,133.28-40,016.96

Finding the Fourth Proportional to 128,801.60, 193,133.28 and 40,016.96

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Solution

The fourth proportional to 128,801.60, 193,133.28 and 40,016.96 is: 60,003.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,801.60 : 193,133.28 = 40,016.96 : x
  2. Step 2: Convert to fraction form
    128,801.60/193,133.28 = 40,016.96/x
  3. Step 3: Cross multiply
    128,801.60x = 193,133.28 × 40,016.96
  4. Step 4: Simplify right side
    128,801.60x = 7,728,606,740.43
  5. Step 5: Solve for x
    x = 7,728,606,740.43/128,801.60
  6. Step 6: Final answer
    x = 60,003.97

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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.