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Finding the Fourth Proportional to 118,636, 163,716.45 and 67,657.03

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Solution

The fourth proportional to 118,636, 163,716.45 and 67,657.03 is: 93,366.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,636 : 163,716.45 = 67,657.03 : x
  2. Step 2: Convert to fraction form
    118,636/163,716.45 = 67,657.03/x
  3. Step 3: Cross multiply
    118,636x = 163,716.45 × 67,657.03
  4. Step 4: Simplify right side
    118,636x = 11,076,568,769.14
  5. Step 5: Solve for x
    x = 11,076,568,769.14/118,636
  6. Step 6: Final answer
    x = 93,366.00

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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.