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Finding the Fourth Proportional to 101,171.48, 139,486.94 and 82,955.14

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Solution

The fourth proportional to 101,171.48, 139,486.94 and 82,955.14 is: 114,371.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,171.48 : 139,486.94 = 82,955.14 : x
  2. Step 2: Convert to fraction form
    101,171.48/139,486.94 = 82,955.14/x
  3. Step 3: Cross multiply
    101,171.48x = 139,486.94 × 82,955.14
  4. Step 4: Simplify right side
    101,171.48x = 11,571,157,950.15
  5. Step 5: Solve for x
    x = 11,571,157,950.15/101,171.48
  6. Step 6: Final answer
    x = 114,371.74

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1.5x scale

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.