Home / 128,781.96-193,156.56-49,842.24

Finding the Fourth Proportional to 128,781.96, 193,156.56 and 49,842.24

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Solution

The fourth proportional to 128,781.96, 193,156.56 and 49,842.24 is: 74,757.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,781.96 : 193,156.56 = 49,842.24 : x
  2. Step 2: Convert to fraction form
    128,781.96/193,156.56 = 49,842.24/x
  3. Step 3: Cross multiply
    128,781.96x = 193,156.56 × 49,842.24
  4. Step 4: Simplify right side
    128,781.96x = 9,627,355,621.09
  5. Step 5: Solve for x
    x = 9,627,355,621.09/128,781.96
  6. Step 6: Final answer
    x = 74,757.02

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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.