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Finding the Fourth Proportional to 101,134.92, 139,506.06 and 65,346.03

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Solution

The fourth proportional to 101,134.92, 139,506.06 and 65,346.03 is: 90,138.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,134.92 : 139,506.06 = 65,346.03 : x
  2. Step 2: Convert to fraction form
    101,134.92/139,506.06 = 65,346.03/x
  3. Step 3: Cross multiply
    101,134.92x = 139,506.06 × 65,346.03
  4. Step 4: Simplify right side
    101,134.92x = 9,116,167,181.94
  5. Step 5: Solve for x
    x = 9,116,167,181.94/101,134.92
  6. Step 6: Final answer
    x = 90,138.67

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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.