Home / 128,928.02-193,391.46-40,181.60

Finding the Fourth Proportional to 128,928.02, 193,391.46 and 40,181.60

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Solution

The fourth proportional to 128,928.02, 193,391.46 and 40,181.60 is: 60,272.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,928.02 : 193,391.46 = 40,181.60 : x
  2. Step 2: Convert to fraction form
    128,928.02/193,391.46 = 40,181.60/x
  3. Step 3: Cross multiply
    128,928.02x = 193,391.46 × 40,181.60
  4. Step 4: Simplify right side
    128,928.02x = 7,770,778,289.14
  5. Step 5: Solve for x
    x = 7,770,778,289.14/128,928.02
  6. Step 6: Final answer
    x = 60,272.22

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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.