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Finding the Fourth Proportional to 131,579, 181,583.34 and 71,963

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Solution

The fourth proportional to 131,579, 181,583.34 and 71,963 is: 99,311.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,579 : 181,583.34 = 71,963 : x
  2. Step 2: Convert to fraction form
    131,579/181,583.34 = 71,963/x
  3. Step 3: Cross multiply
    131,579x = 181,583.34 × 71,963
  4. Step 4: Simplify right side
    131,579x = 13,067,281,896.42
  5. Step 5: Solve for x
    x = 13,067,281,896.42/131,579
  6. Step 6: Final answer
    x = 99,311.30

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Why These Related Problems?

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