Home / 196,812.40-295,218.60-72,137.20

Finding the Fourth Proportional to 196,812.40, 295,218.60 and 72,137.20

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Solution

The fourth proportional to 196,812.40, 295,218.60 and 72,137.20 is: 108,205.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,812.40 : 295,218.60 = 72,137.20 : x
  2. Step 2: Convert to fraction form
    196,812.40/295,218.60 = 72,137.20/x
  3. Step 3: Cross multiply
    196,812.40x = 295,218.60 × 72,137.20
  4. Step 4: Simplify right side
    196,812.40x = 21,296,243,191.92
  5. Step 5: Solve for x
    x = 21,296,243,191.92/196,812.40
  6. Step 6: Final answer
    x = 108,205.80

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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.