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Finding the Fourth Proportional to 118,629.42, 163,647.29 and 80,375.88

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Solution

The fourth proportional to 118,629.42, 163,647.29 and 80,375.88 is: 110,877.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,629.42 : 163,647.29 = 80,375.88 : x
  2. Step 2: Convert to fraction form
    118,629.42/163,647.29 = 80,375.88/x
  3. Step 3: Cross multiply
    118,629.42x = 163,647.29 × 80,375.88
  4. Step 4: Simplify right side
    118,629.42x = 13,153,293,927.81
  5. Step 5: Solve for x
    x = 13,153,293,927.81/118,629.42
  6. Step 6: Final answer
    x = 110,877.17

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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.