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Finding the Fourth Proportional to 101,993.55, 140,705.81 and 67,968.89

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Solution

The fourth proportional to 101,993.55, 140,705.81 and 67,968.89 is: 93,766.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,993.55 : 140,705.81 = 67,968.89 : x
  2. Step 2: Convert to fraction form
    101,993.55/140,705.81 = 67,968.89/x
  3. Step 3: Cross multiply
    101,993.55x = 140,705.81 × 67,968.89
  4. Step 4: Simplify right side
    101,993.55x = 9,563,617,722.25
  5. Step 5: Solve for x
    x = 9,563,617,722.25/101,993.55
  6. Step 6: Final answer
    x = 93,766.89

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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.