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Finding the Fourth Proportional to 134,801.25, 186,022.62 and 74,371.86

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Solution

The fourth proportional to 134,801.25, 186,022.62 and 74,371.86 is: 102,631.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,801.25 : 186,022.62 = 74,371.86 : x
  2. Step 2: Convert to fraction form
    134,801.25/186,022.62 = 74,371.86/x
  3. Step 3: Cross multiply
    134,801.25x = 186,022.62 × 74,371.86
  4. Step 4: Simplify right side
    134,801.25x = 13,834,848,251.47
  5. Step 5: Solve for x
    x = 13,834,848,251.47/134,801.25
  6. Step 6: Final answer
    x = 102,631.45

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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.