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Finding the Fourth Proportional to 118,121.86, 163,007.13 and 67,821.22

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Solution

The fourth proportional to 118,121.86, 163,007.13 and 67,821.22 is: 93,592.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,121.86 : 163,007.13 = 67,821.22 : x
  2. Step 2: Convert to fraction form
    118,121.86/163,007.13 = 67,821.22/x
  3. Step 3: Cross multiply
    118,121.86x = 163,007.13 × 67,821.22
  4. Step 4: Simplify right side
    118,121.86x = 11,055,342,425.30
  5. Step 5: Solve for x
    x = 11,055,342,425.30/118,121.86
  6. Step 6: Final answer
    x = 93,592.69

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1.5x scale

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.