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Finding the Fourth Proportional to 118,736.64, 163,851.65 and 65,020.73

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Solution

The fourth proportional to 118,736.64, 163,851.65 and 65,020.73 is: 89,725.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,736.64 : 163,851.65 = 65,020.73 : x
  2. Step 2: Convert to fraction form
    118,736.64/163,851.65 = 65,020.73/x
  3. Step 3: Cross multiply
    118,736.64x = 163,851.65 × 65,020.73
  4. Step 4: Simplify right side
    118,736.64x = 10,653,754,184.04
  5. Step 5: Solve for x
    x = 10,653,754,184.04/118,736.64
  6. Step 6: Final answer
    x = 89,725.92

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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.