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Finding the Fourth Proportional to 118,673.70, 163,766.46 and 67,685.28

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Solution

The fourth proportional to 118,673.70, 163,766.46 and 67,685.28 is: 93,403.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,673.70 : 163,766.46 = 67,685.28 : x
  2. Step 2: Convert to fraction form
    118,673.70/163,766.46 = 67,685.28/x
  3. Step 3: Cross multiply
    118,673.70x = 163,766.46 × 67,685.28
  4. Step 4: Simplify right side
    118,673.70x = 11,084,578,699.71
  5. Step 5: Solve for x
    x = 11,084,578,699.71/118,673.70
  6. Step 6: Final answer
    x = 93,403.84

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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.