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Finding the Fourth Proportional to 101,416.88, 139,912.44 and 67,893.68

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Solution

The fourth proportional to 101,416.88, 139,912.44 and 67,893.68 is: 93,664.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,416.88 : 139,912.44 = 67,893.68 : x
  2. Step 2: Convert to fraction form
    101,416.88/139,912.44 = 67,893.68/x
  3. Step 3: Cross multiply
    101,416.88x = 139,912.44 × 67,893.68
  4. Step 4: Simplify right side
    101,416.88x = 9,499,170,429.38
  5. Step 5: Solve for x
    x = 9,499,170,429.38/101,416.88
  6. Step 6: Final answer
    x = 93,664.59

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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.