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Finding the Fourth Proportional to 118,168.36, 163,086.12 and 67,188.72

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Solution

The fourth proportional to 118,168.36, 163,086.12 and 67,188.72 is: 92,728.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,168.36 : 163,086.12 = 67,188.72 : x
  2. Step 2: Convert to fraction form
    118,168.36/163,086.12 = 67,188.72/x
  3. Step 3: Cross multiply
    118,168.36x = 163,086.12 × 67,188.72
  4. Step 4: Simplify right side
    118,168.36x = 10,957,548,264.14
  5. Step 5: Solve for x
    x = 10,957,548,264.14/118,168.36
  6. Step 6: Final answer
    x = 92,728.28

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1.5x scale

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.