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Finding the Fourth Proportional to 101,457.39, 139,986.03 and 65,604.27

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Solution

The fourth proportional to 101,457.39, 139,986.03 and 65,604.27 is: 90,517.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,457.39 : 139,986.03 = 65,604.27 : x
  2. Step 2: Convert to fraction form
    101,457.39/139,986.03 = 65,604.27/x
  3. Step 3: Cross multiply
    101,457.39x = 139,986.03 × 65,604.27
  4. Step 4: Simplify right side
    101,457.39x = 9,183,681,308.35
  5. Step 5: Solve for x
    x = 9,183,681,308.35/101,457.39
  6. Step 6: Final answer
    x = 90,517.62

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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.