Home / 142,003.20-212,745.60-115,564.80

Finding the Fourth Proportional to 142,003.20, 212,745.60 and 115,564.80

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Solution

The fourth proportional to 142,003.20, 212,745.60 and 115,564.80 is: 173,136.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,003.20 : 212,745.60 = 115,564.80 : x
  2. Step 2: Convert to fraction form
    142,003.20/212,745.60 = 115,564.80/x
  3. Step 3: Cross multiply
    142,003.20x = 212,745.60 × 115,564.80
  4. Step 4: Simplify right side
    142,003.20x = 24,585,902,714.88
  5. Step 5: Solve for x
    x = 24,585,902,714.88/142,003.20
  6. Step 6: Final answer
    x = 173,136.26

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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.