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Finding the Fourth Proportional to 131,354.64, 181,269.60 and 74,766

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Solution

The fourth proportional to 131,354.64, 181,269.60 and 74,766 is: 103,177.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,354.64 : 181,269.60 = 74,766 : x
  2. Step 2: Convert to fraction form
    131,354.64/181,269.60 = 74,766/x
  3. Step 3: Cross multiply
    131,354.64x = 181,269.60 × 74,766
  4. Step 4: Simplify right side
    131,354.64x = 13,552,802,913.60
  5. Step 5: Solve for x
    x = 13,552,802,913.60/131,354.64
  6. Step 6: Final answer
    x = 103,177.19

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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.