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Finding the Fourth Proportional to 139,675.22, 192,977.31 and 97,422.38

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Solution

The fourth proportional to 139,675.22, 192,977.31 and 97,422.38 is: 134,600.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,675.22 : 192,977.31 = 97,422.38 : x
  2. Step 2: Convert to fraction form
    139,675.22/192,977.31 = 97,422.38/x
  3. Step 3: Cross multiply
    139,675.22x = 192,977.31 × 97,422.38
  4. Step 4: Simplify right side
    139,675.22x = 18,800,308,826.20
  5. Step 5: Solve for x
    x = 18,800,308,826.20/139,675.22
  6. Step 6: Final answer
    x = 134,600.17

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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.