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Finding the Fourth Proportional to 192,570.36, 288,997.47 and 91,368.81

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Solution

The fourth proportional to 192,570.36, 288,997.47 and 91,368.81 is: 137,120.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,570.36 : 288,997.47 = 91,368.81 : x
  2. Step 2: Convert to fraction form
    192,570.36/288,997.47 = 91,368.81/x
  3. Step 3: Cross multiply
    192,570.36x = 288,997.47 × 91,368.81
  4. Step 4: Simplify right side
    192,570.36x = 26,405,354,926.91
  5. Step 5: Solve for x
    x = 26,405,354,926.91/192,570.36
  6. Step 6: Final answer
    x = 137,120.56

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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.