Home / 135,084.72-202,563.48-78,941.04

Finding the Fourth Proportional to 135,084.72, 202,563.48 and 78,941.04

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Solution

The fourth proportional to 135,084.72, 202,563.48 and 78,941.04 is: 118,374.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,084.72 : 202,563.48 = 78,941.04 : x
  2. Step 2: Convert to fraction form
    135,084.72/202,563.48 = 78,941.04/x
  3. Step 3: Cross multiply
    135,084.72x = 202,563.48 × 78,941.04
  4. Step 4: Simplify right side
    135,084.72x = 15,990,571,777.22
  5. Step 5: Solve for x
    x = 15,990,571,777.22/135,084.72
  6. Step 6: Final answer
    x = 118,374.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.