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Finding the Fourth Proportional to 118,879.30, 164,052.64 and 65,166.58

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Solution

The fourth proportional to 118,879.30, 164,052.64 and 65,166.58 is: 89,929.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,879.30 : 164,052.64 = 65,166.58 : x
  2. Step 2: Convert to fraction form
    118,879.30/164,052.64 = 65,166.58/x
  3. Step 3: Cross multiply
    118,879.30x = 164,052.64 × 65,166.58
  4. Step 4: Simplify right side
    118,879.30x = 10,690,749,488.77
  5. Step 5: Solve for x
    x = 10,690,749,488.77/118,879.30
  6. Step 6: Final answer
    x = 89,929.45

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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.