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Finding the Fourth Proportional to 101,018.28, 139,302 and 67,014.84

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Solution

The fourth proportional to 101,018.28, 139,302 and 67,014.84 is: 92,412.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,018.28 : 139,302 = 67,014.84 : x
  2. Step 2: Convert to fraction form
    101,018.28/139,302 = 67,014.84/x
  3. Step 3: Cross multiply
    101,018.28x = 139,302 × 67,014.84
  4. Step 4: Simplify right side
    101,018.28x = 9,335,301,241.68
  5. Step 5: Solve for x
    x = 9,335,301,241.68/101,018.28
  6. Step 6: Final answer
    x = 92,412.00

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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.