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Finding the Fourth Proportional to 118,696.26, 163,800.80 and 64,981.10

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Solution

The fourth proportional to 118,696.26, 163,800.80 and 64,981.10 is: 89,673.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,696.26 : 163,800.80 = 64,981.10 : x
  2. Step 2: Convert to fraction form
    118,696.26/163,800.80 = 64,981.10/x
  3. Step 3: Cross multiply
    118,696.26x = 163,800.80 × 64,981.10
  4. Step 4: Simplify right side
    118,696.26x = 10,643,956,164.88
  5. Step 5: Solve for x
    x = 10,643,956,164.88/118,696.26
  6. Step 6: Final answer
    x = 89,673.90

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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.