Home / 128,972.40-193,458.60-115,850.40

Finding the Fourth Proportional to 128,972.40, 193,458.60 and 115,850.40

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Solution

The fourth proportional to 128,972.40, 193,458.60 and 115,850.40 is: 173,775.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,972.40 : 193,458.60 = 115,850.40 : x
  2. Step 2: Convert to fraction form
    128,972.40/193,458.60 = 115,850.40/x
  3. Step 3: Cross multiply
    128,972.40x = 193,458.60 × 115,850.40
  4. Step 4: Simplify right side
    128,972.40x = 22,412,256,193.44
  5. Step 5: Solve for x
    x = 22,412,256,193.44/128,972.40
  6. Step 6: Final answer
    x = 173,775.60

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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.