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Finding the Fourth Proportional to 118,800, 163,944 and 65,808

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Solution

The fourth proportional to 118,800, 163,944 and 65,808 is: 90,815.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,800 : 163,944 = 65,808 : x
  2. Step 2: Convert to fraction form
    118,800/163,944 = 65,808/x
  3. Step 3: Cross multiply
    118,800x = 163,944 × 65,808
  4. Step 4: Simplify right side
    118,800x = 10,788,826,752
  5. Step 5: Solve for x
    x = 10,788,826,752/118,800
  6. Step 6: Final answer
    x = 90,815.04

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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.