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Finding the Fourth Proportional to 131,614, 181,631.64 and 71,998

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Solution

The fourth proportional to 131,614, 181,631.64 and 71,998 is: 99,359.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,614 : 181,631.64 = 71,998 : x
  2. Step 2: Convert to fraction form
    131,614/181,631.64 = 71,998/x
  3. Step 3: Cross multiply
    131,614x = 181,631.64 × 71,998
  4. Step 4: Simplify right side
    131,614x = 13,077,114,816.72
  5. Step 5: Solve for x
    x = 13,077,114,816.72/131,614
  6. Step 6: Final answer
    x = 99,359.60

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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.