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Finding the Fourth Proportional to 134,481.56, 185,581.20 and 74,051.72

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Solution

The fourth proportional to 134,481.56, 185,581.20 and 74,051.72 is: 102,189.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,481.56 : 185,581.20 = 74,051.72 : x
  2. Step 2: Convert to fraction form
    134,481.56/185,581.20 = 74,051.72/x
  3. Step 3: Cross multiply
    134,481.56x = 185,581.20 × 74,051.72
  4. Step 4: Simplify right side
    134,481.56x = 13,742,607,059.66
  5. Step 5: Solve for x
    x = 13,742,607,059.66/134,481.56
  6. Step 6: Final answer
    x = 102,189.53

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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.