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Finding the Fourth Proportional to 118,653.93, 163,734.20 and 67,668.81

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Solution

The fourth proportional to 118,653.93, 163,734.20 and 67,668.81 is: 93,378.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,653.93 : 163,734.20 = 67,668.81 : x
  2. Step 2: Convert to fraction form
    118,653.93/163,734.20 = 67,668.81/x
  3. Step 3: Cross multiply
    118,653.93x = 163,734.20 × 67,668.81
  4. Step 4: Simplify right side
    118,653.93x = 11,079,698,639.47
  5. Step 5: Solve for x
    x = 11,079,698,639.47/118,653.93
  6. Step 6: Final answer
    x = 93,378.27

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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.