Home / 128,933.60-193,400.40-40,194.28

Finding the Fourth Proportional to 128,933.60, 193,400.40 and 40,194.28

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Solution

The fourth proportional to 128,933.60, 193,400.40 and 40,194.28 is: 60,291.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,933.60 : 193,400.40 = 40,194.28 : x
  2. Step 2: Convert to fraction form
    128,933.60/193,400.40 = 40,194.28/x
  3. Step 3: Cross multiply
    128,933.60x = 193,400.40 × 40,194.28
  4. Step 4: Simplify right side
    128,933.60x = 7,773,589,829.71
  5. Step 5: Solve for x
    x = 7,773,589,829.71/128,933.60
  6. Step 6: Final answer
    x = 60,291.42

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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.