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Finding the Fourth Proportional to 134,407.71, 185,481.21 and 73,977.06

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Solution

The fourth proportional to 134,407.71, 185,481.21 and 73,977.06 is: 102,087.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,407.71 : 185,481.21 = 73,977.06 : x
  2. Step 2: Convert to fraction form
    134,407.71/185,481.21 = 73,977.06/x
  3. Step 3: Cross multiply
    134,407.71x = 185,481.21 × 73,977.06
  4. Step 4: Simplify right side
    134,407.71x = 13,721,354,601.04
  5. Step 5: Solve for x
    x = 13,721,354,601.04/134,407.71
  6. Step 6: Final answer
    x = 102,087.56

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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.