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Finding the Fourth Proportional to 122,147.84, 168,525.76 and 68,425.60

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Solution

The fourth proportional to 122,147.84, 168,525.76 and 68,425.60 is: 94,405.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,147.84 : 168,525.76 = 68,425.60 : x
  2. Step 2: Convert to fraction form
    122,147.84/168,525.76 = 68,425.60/x
  3. Step 3: Cross multiply
    122,147.84x = 168,525.76 × 68,425.60
  4. Step 4: Simplify right side
    122,147.84x = 11,531,476,243.46
  5. Step 5: Solve for x
    x = 11,531,476,243.46/122,147.84
  6. Step 6: Final answer
    x = 94,405.90

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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.