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Finding the Fourth Proportional to 118,752.49, 163,837.80 and 67,728.55

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Solution

The fourth proportional to 118,752.49, 163,837.80 and 67,728.55 is: 93,442.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,752.49 : 163,837.80 = 67,728.55 : x
  2. Step 2: Convert to fraction form
    118,752.49/163,837.80 = 67,728.55/x
  3. Step 3: Cross multiply
    118,752.49x = 163,837.80 × 67,728.55
  4. Step 4: Simplify right side
    118,752.49x = 11,096,496,629.19
  5. Step 5: Solve for x
    x = 11,096,496,629.19/118,752.49
  6. Step 6: Final answer
    x = 93,442.22

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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.