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Finding the Fourth Proportional to 101,325.94, 139,757.27 and 71,118

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Solution

The fourth proportional to 101,325.94, 139,757.27 and 71,118 is: 98,091.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,325.94 : 139,757.27 = 71,118 : x
  2. Step 2: Convert to fraction form
    101,325.94/139,757.27 = 71,118/x
  3. Step 3: Cross multiply
    101,325.94x = 139,757.27 × 71,118
  4. Step 4: Simplify right side
    101,325.94x = 9,939,257,705.66
  5. Step 5: Solve for x
    x = 9,939,257,705.66/101,325.94
  6. Step 6: Final answer
    x = 98,091.94

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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.