Home / 128,922.21-193,383.38-40,182.87

Finding the Fourth Proportional to 128,922.21, 193,383.38 and 40,182.87

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Solution

The fourth proportional to 128,922.21, 193,383.38 and 40,182.87 is: 60,274.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,922.21 : 193,383.38 = 40,182.87 : x
  2. Step 2: Convert to fraction form
    128,922.21/193,383.38 = 40,182.87/x
  3. Step 3: Cross multiply
    128,922.21x = 193,383.38 × 40,182.87
  4. Step 4: Simplify right side
    128,922.21x = 7,770,699,017.79
  5. Step 5: Solve for x
    x = 7,770,699,017.79/128,922.21
  6. Step 6: Final answer
    x = 60,274.32

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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.