Home / 243,621.78-336,200.55-136,197.78

Finding the Fourth Proportional to 243,621.78, 336,200.55 and 136,197.78

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Solution

The fourth proportional to 243,621.78, 336,200.55 and 136,197.78 is: 187,954.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,621.78 : 336,200.55 = 136,197.78 : x
  2. Step 2: Convert to fraction form
    243,621.78/336,200.55 = 136,197.78/x
  3. Step 3: Cross multiply
    243,621.78x = 336,200.55 × 136,197.78
  4. Step 4: Simplify right side
    243,621.78x = 45,789,768,544.78
  5. Step 5: Solve for x
    x = 45,789,768,544.78/243,621.78
  6. Step 6: Final answer
    x = 187,954.33

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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.