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Finding the Fourth Proportional to 181,700, 272,768.88 and 131,136.56

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Solution

The fourth proportional to 181,700, 272,768.88 and 131,136.56 is: 196,862.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,700 : 272,768.88 = 131,136.56 : x
  2. Step 2: Convert to fraction form
    181,700/272,768.88 = 131,136.56/x
  3. Step 3: Cross multiply
    181,700x = 272,768.88 × 131,136.56
  4. Step 4: Simplify right side
    181,700x = 35,769,972,598.25
  5. Step 5: Solve for x
    x = 35,769,972,598.25/181,700
  6. Step 6: Final answer
    x = 196,862.81

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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.