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Finding the Fourth Proportional to 178,610, 246,481.80 and 99,122

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Solution

The fourth proportional to 178,610, 246,481.80 and 99,122 is: 136,788.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,610 : 246,481.80 = 99,122 : x
  2. Step 2: Convert to fraction form
    178,610/246,481.80 = 99,122/x
  3. Step 3: Cross multiply
    178,610x = 246,481.80 × 99,122
  4. Step 4: Simplify right side
    178,610x = 24,431,768,979.60
  5. Step 5: Solve for x
    x = 24,431,768,979.60/178,610
  6. Step 6: Final answer
    x = 136,788.36

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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.