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Finding the Fourth Proportional to 101,162.79, 139,583.81 and 58,133.97

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Solution

The fourth proportional to 101,162.79, 139,583.81 and 58,133.97 is: 80,212.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,162.79 : 139,583.81 = 58,133.97 : x
  2. Step 2: Convert to fraction form
    101,162.79/139,583.81 = 58,133.97/x
  3. Step 3: Cross multiply
    101,162.79x = 139,583.81 × 58,133.97
  4. Step 4: Simplify right side
    101,162.79x = 8,114,561,023.03
  5. Step 5: Solve for x
    x = 8,114,561,023.03/101,162.79
  6. Step 6: Final answer
    x = 80,212.90

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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.