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Finding the Fourth Proportional to 118,692, 163,794.96 and 65,700

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Solution

The fourth proportional to 118,692, 163,794.96 and 65,700 is: 90,666

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,692 : 163,794.96 = 65,700 : x
  2. Step 2: Convert to fraction form
    118,692/163,794.96 = 65,700/x
  3. Step 3: Cross multiply
    118,692x = 163,794.96 × 65,700
  4. Step 4: Simplify right side
    118,692x = 10,761,328,872
  5. Step 5: Solve for x
    x = 10,761,328,872/118,692
  6. Step 6: Final answer
    x = 90,666

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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.