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Finding the Fourth Proportional to 106,479, 146,950.92 and 61,163.28

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Solution

The fourth proportional to 106,479, 146,950.92 and 61,163.28 is: 84,411.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,479 : 146,950.92 = 61,163.28 : x
  2. Step 2: Convert to fraction form
    106,479/146,950.92 = 61,163.28/x
  3. Step 3: Cross multiply
    106,479x = 146,950.92 × 61,163.28
  4. Step 4: Simplify right side
    106,479x = 8,988,000,266.22
  5. Step 5: Solve for x
    x = 8,988,000,266.22/106,479
  6. Step 6: Final answer
    x = 84,411.01

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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.