Home / 128,788.40-193,191.82-34,017.64

Finding the Fourth Proportional to 128,788.40, 193,191.82 and 34,017.64

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Solution

The fourth proportional to 128,788.40, 193,191.82 and 34,017.64 is: 51,028.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,788.40 : 193,191.82 = 34,017.64 : x
  2. Step 2: Convert to fraction form
    128,788.40/193,191.82 = 34,017.64/x
  3. Step 3: Cross multiply
    128,788.40x = 193,191.82 × 34,017.64
  4. Step 4: Simplify right side
    128,788.40x = 6,571,928,951.68
  5. Step 5: Solve for x
    x = 6,571,928,951.68/128,788.40
  6. Step 6: Final answer
    x = 51,028.89

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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.