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Finding the Fourth Proportional to 135,036.59, 186,334.60 and 74,603.62

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Solution

The fourth proportional to 135,036.59, 186,334.60 and 74,603.62 is: 102,944.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,036.59 : 186,334.60 = 74,603.62 : x
  2. Step 2: Convert to fraction form
    135,036.59/186,334.60 = 74,603.62/x
  3. Step 3: Cross multiply
    135,036.59x = 186,334.60 × 74,603.62
  4. Step 4: Simplify right side
    135,036.59x = 13,901,236,611.43
  5. Step 5: Solve for x
    x = 13,901,236,611.43/135,036.59
  6. Step 6: Final answer
    x = 102,944.23

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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.