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Finding the Fourth Proportional to 134,716.86, 185,905.01 and 74,290.05

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Solution

The fourth proportional to 134,716.86, 185,905.01 and 74,290.05 is: 102,517.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,716.86 : 185,905.01 = 74,290.05 : x
  2. Step 2: Convert to fraction form
    134,716.86/185,905.01 = 74,290.05/x
  3. Step 3: Cross multiply
    134,716.86x = 185,905.01 × 74,290.05
  4. Step 4: Simplify right side
    134,716.86x = 13,810,892,116.70
  5. Step 5: Solve for x
    x = 13,810,892,116.70/134,716.86
  6. Step 6: Final answer
    x = 102,517.92

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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.