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Finding the Fourth Proportional to 132,804.90, 198,879.30 and 98,989.83

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Solution

The fourth proportional to 132,804.90, 198,879.30 and 98,989.83 is: 148,240.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,804.90 : 198,879.30 = 98,989.83 : x
  2. Step 2: Convert to fraction form
    132,804.90/198,879.30 = 98,989.83/x
  3. Step 3: Cross multiply
    132,804.90x = 198,879.30 × 98,989.83
  4. Step 4: Simplify right side
    132,804.90x = 19,687,028,097.52
  5. Step 5: Solve for x
    x = 19,687,028,097.52/132,804.90
  6. Step 6: Final answer
    x = 148,240.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.