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Finding the Fourth Proportional to 122,310.42, 168,796.95 and 67,880.40

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Solution

The fourth proportional to 122,310.42, 168,796.95 and 67,880.40 is: 93,679.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,310.42 : 168,796.95 = 67,880.40 : x
  2. Step 2: Convert to fraction form
    122,310.42/168,796.95 = 67,880.40/x
  3. Step 3: Cross multiply
    122,310.42x = 168,796.95 × 67,880.40
  4. Step 4: Simplify right side
    122,310.42x = 11,458,003,597.24
  5. Step 5: Solve for x
    x = 11,458,003,597.24/122,310.42
  6. Step 6: Final answer
    x = 93,679.70

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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.