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Finding the Fourth Proportional to 134,615.55, 185,770.73 and 74,188.37

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Solution

The fourth proportional to 134,615.55, 185,770.73 and 74,188.37 is: 102,380.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,615.55 : 185,770.73 = 74,188.37 : x
  2. Step 2: Convert to fraction form
    134,615.55/185,770.73 = 74,188.37/x
  3. Step 3: Cross multiply
    134,615.55x = 185,770.73 × 74,188.37
  4. Step 4: Simplify right side
    134,615.55x = 13,782,028,302.31
  5. Step 5: Solve for x
    x = 13,782,028,302.31/134,615.55
  6. Step 6: Final answer
    x = 102,380.65

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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.