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Finding the Fourth Proportional to 135,364.53, 186,805.25 and 74,109.68

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Solution

The fourth proportional to 135,364.53, 186,805.25 and 74,109.68 is: 102,272.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,364.53 : 186,805.25 = 74,109.68 : x
  2. Step 2: Convert to fraction form
    135,364.53/186,805.25 = 74,109.68/x
  3. Step 3: Cross multiply
    135,364.53x = 186,805.25 × 74,109.68
  4. Step 4: Simplify right side
    135,364.53x = 13,844,077,299.82
  5. Step 5: Solve for x
    x = 13,844,077,299.82/135,364.53
  6. Step 6: Final answer
    x = 102,272.56

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1.5x scale

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.