Home / 68,128.80-102,193.20-53,350.35

Finding the Fourth Proportional to 68,128.80, 102,193.20 and 53,350.35

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Solution

The fourth proportional to 68,128.80, 102,193.20 and 53,350.35 is: 80,025.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,128.80 : 102,193.20 = 53,350.35 : x
  2. Step 2: Convert to fraction form
    68,128.80/102,193.20 = 53,350.35/x
  3. Step 3: Cross multiply
    68,128.80x = 102,193.20 × 53,350.35
  4. Step 4: Simplify right side
    68,128.80x = 5,452,042,987.62
  5. Step 5: Solve for x
    x = 5,452,042,987.62/68,128.80
  6. Step 6: Final answer
    x = 80,025.53

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1.5x scale

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.