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Finding the Fourth Proportional to 118,694.25, 163,798.04 and 64,979.10

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Solution

The fourth proportional to 118,694.25, 163,798.04 and 64,979.10 is: 89,671.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,694.25 : 163,798.04 = 64,979.10 : x
  2. Step 2: Convert to fraction form
    118,694.25/163,798.04 = 64,979.10/x
  3. Step 3: Cross multiply
    118,694.25x = 163,798.04 × 64,979.10
  4. Step 4: Simplify right side
    118,694.25x = 10,643,448,896.07
  5. Step 5: Solve for x
    x = 10,643,448,896.07/118,694.25
  6. Step 6: Final answer
    x = 89,671.14

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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.