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Finding the Fourth Proportional to 118,650.40, 163,737.62 and 64,935.39

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Solution

The fourth proportional to 118,650.40, 163,737.62 and 64,935.39 is: 89,610.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,650.40 : 163,737.62 = 64,935.39 : x
  2. Step 2: Convert to fraction form
    118,650.40/163,737.62 = 64,935.39/x
  3. Step 3: Cross multiply
    118,650.40x = 163,737.62 × 64,935.39
  4. Step 4: Simplify right side
    118,650.40x = 10,632,366,212.37
  5. Step 5: Solve for x
    x = 10,632,366,212.37/118,650.40
  6. Step 6: Final answer
    x = 89,610.88

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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.