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Finding the Fourth Proportional to 118,631.56, 163,713.08 and 68,330.56

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Solution

The fourth proportional to 118,631.56, 163,713.08 and 68,330.56 is: 94,297.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,631.56 : 163,713.08 = 68,330.56 : x
  2. Step 2: Convert to fraction form
    118,631.56/163,713.08 = 68,330.56/x
  3. Step 3: Cross multiply
    118,631.56x = 163,713.08 × 68,330.56
  4. Step 4: Simplify right side
    118,631.56x = 11,186,606,435.72
  5. Step 5: Solve for x
    x = 11,186,606,435.72/118,631.56
  6. Step 6: Final answer
    x = 94,297.05

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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.