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Finding the Fourth Proportional to 122,322, 168,804.66 and 71,369.76

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Solution

The fourth proportional to 122,322, 168,804.66 and 71,369.76 is: 98,490.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,322 : 168,804.66 = 71,369.76 : x
  2. Step 2: Convert to fraction form
    122,322/168,804.66 = 71,369.76/x
  3. Step 3: Cross multiply
    122,322x = 168,804.66 × 71,369.76
  4. Step 4: Simplify right side
    122,322x = 12,047,548,071.08
  5. Step 5: Solve for x
    x = 12,047,548,071.08/122,322
  6. Step 6: Final answer
    x = 98,490.44

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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.