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Finding the Fourth Proportional to 131,369, 181,289.94 and 71,753

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Solution

The fourth proportional to 131,369, 181,289.94 and 71,753 is: 99,019.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,369 : 181,289.94 = 71,753 : x
  2. Step 2: Convert to fraction form
    131,369/181,289.94 = 71,753/x
  3. Step 3: Cross multiply
    131,369x = 181,289.94 × 71,753
  4. Step 4: Simplify right side
    131,369x = 13,008,097,064.82
  5. Step 5: Solve for x
    x = 13,008,097,064.82/131,369
  6. Step 6: Final answer
    x = 99,019.53

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.