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Finding the Fourth Proportional to 118,436.90, 163,366.54 and 70,653.38

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Solution

The fourth proportional to 118,436.90, 163,366.54 and 70,653.38 is: 97,456.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,436.90 : 163,366.54 = 70,653.38 : x
  2. Step 2: Convert to fraction form
    118,436.90/163,366.54 = 70,653.38/x
  3. Step 3: Cross multiply
    118,436.90x = 163,366.54 × 70,653.38
  4. Step 4: Simplify right side
    118,436.90x = 11,542,397,236.44
  5. Step 5: Solve for x
    x = 11,542,397,236.44/118,436.90
  6. Step 6: Final answer
    x = 97,456.09

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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.