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Finding the Fourth Proportional to 118,635.64, 177,969.12 and 43,808.38

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Solution

The fourth proportional to 118,635.64, 177,969.12 and 43,808.38 is: 65,718.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,635.64 : 177,969.12 = 43,808.38 : x
  2. Step 2: Convert to fraction form
    118,635.64/177,969.12 = 43,808.38/x
  3. Step 3: Cross multiply
    118,635.64x = 177,969.12 × 43,808.38
  4. Step 4: Simplify right side
    118,635.64x = 7,796,538,837.23
  5. Step 5: Solve for x
    x = 7,796,538,837.23/118,635.64
  6. Step 6: Final answer
    x = 65,718.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.