Home / 128,728.35-193,092.53-49,842.58

Finding the Fourth Proportional to 128,728.35, 193,092.53 and 49,842.58

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Solution

The fourth proportional to 128,728.35, 193,092.53 and 49,842.58 is: 74,763.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,728.35 : 193,092.53 = 49,842.58 : x
  2. Step 2: Convert to fraction form
    128,728.35/193,092.53 = 49,842.58/x
  3. Step 3: Cross multiply
    128,728.35x = 193,092.53 × 49,842.58
  4. Step 4: Simplify right side
    128,728.35x = 9,624,229,873.93
  5. Step 5: Solve for x
    x = 9,624,229,873.93/128,728.35
  6. Step 6: Final answer
    x = 74,763.87

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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.