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Finding the Fourth Proportional to 131,583.62, 181,574.43 and 74,219.78

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Solution

The fourth proportional to 131,583.62, 181,574.43 and 74,219.78 is: 102,417.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,583.62 : 181,574.43 = 74,219.78 : x
  2. Step 2: Convert to fraction form
    131,583.62/181,574.43 = 74,219.78/x
  3. Step 3: Cross multiply
    131,583.62x = 181,574.43 × 74,219.78
  4. Step 4: Simplify right side
    131,583.62x = 13,476,414,248.23
  5. Step 5: Solve for x
    x = 13,476,414,248.23/131,583.62
  6. Step 6: Final answer
    x = 102,417.11

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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.