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Finding the Fourth Proportional to 118,694.16, 163,797.66 and 64,979.16

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Solution

The fourth proportional to 118,694.16, 163,797.66 and 64,979.16 is: 89,671.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,694.16 : 163,797.66 = 64,979.16 : x
  2. Step 2: Convert to fraction form
    118,694.16/163,797.66 = 64,979.16/x
  3. Step 3: Cross multiply
    118,694.16x = 163,797.66 × 64,979.16
  4. Step 4: Simplify right side
    118,694.16x = 10,643,434,356.77
  5. Step 5: Solve for x
    x = 10,643,434,356.77/118,694.16
  6. Step 6: Final answer
    x = 89,671.09

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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.