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Finding the Fourth Proportional to 109,098.66, 150,490.80 and 66,583.38

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Solution

The fourth proportional to 109,098.66, 150,490.80 and 66,583.38 is: 91,845.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,098.66 : 150,490.80 = 66,583.38 : x
  2. Step 2: Convert to fraction form
    109,098.66/150,490.80 = 66,583.38/x
  3. Step 3: Cross multiply
    109,098.66x = 150,490.80 × 66,583.38
  4. Step 4: Simplify right side
    109,098.66x = 10,020,186,122.90
  5. Step 5: Solve for x
    x = 10,020,186,122.90/109,098.66
  6. Step 6: Final answer
    x = 91,845.18

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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.