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Finding the Fourth Proportional to 122,070, 168,442.42 and 71,093.88

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Solution

The fourth proportional to 122,070, 168,442.42 and 71,093.88 is: 98,101.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,070 : 168,442.42 = 71,093.88 : x
  2. Step 2: Convert to fraction form
    122,070/168,442.42 = 71,093.88/x
  3. Step 3: Cross multiply
    122,070x = 168,442.42 × 71,093.88
  4. Step 4: Simplify right side
    122,070x = 11,975,225,194.39
  5. Step 5: Solve for x
    x = 11,975,225,194.39/122,070
  6. Step 6: Final answer
    x = 98,101.30

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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.