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Finding the Fourth Proportional to 118,636.18, 163,716.71 and 67,657.21

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Solution

The fourth proportional to 118,636.18, 163,716.71 and 67,657.21 is: 93,366.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,636.18 : 163,716.71 = 67,657.21 : x
  2. Step 2: Convert to fraction form
    118,636.18/163,716.71 = 67,657.21/x
  3. Step 3: Cross multiply
    118,636.18x = 163,716.71 × 67,657.21
  4. Step 4: Simplify right side
    118,636.18x = 11,076,615,490.69
  5. Step 5: Solve for x
    x = 11,076,615,490.69/118,636.18
  6. Step 6: Final answer
    x = 93,366.25

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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.