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Finding the Fourth Proportional to 101,455.44, 139,942.08 and 61,141.92

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Solution

The fourth proportional to 101,455.44, 139,942.08 and 61,141.92 is: 84,335.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,455.44 : 139,942.08 = 61,141.92 : x
  2. Step 2: Convert to fraction form
    101,455.44/139,942.08 = 61,141.92/x
  3. Step 3: Cross multiply
    101,455.44x = 139,942.08 × 61,141.92
  4. Step 4: Simplify right side
    101,455.44x = 8,556,327,459.99
  5. Step 5: Solve for x
    x = 8,556,327,459.99/101,455.44
  6. Step 6: Final answer
    x = 84,335.82

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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.