Home / 103,639.17-154,650.49-92,469.09

Finding the Fourth Proportional to 103,639.17, 154,650.49 and 92,469.09

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Solution

The fourth proportional to 103,639.17, 154,650.49 and 92,469.09 is: 137,982.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,639.17 : 154,650.49 = 92,469.09 : x
  2. Step 2: Convert to fraction form
    103,639.17/154,650.49 = 92,469.09/x
  3. Step 3: Cross multiply
    103,639.17x = 154,650.49 × 92,469.09
  4. Step 4: Simplify right side
    103,639.17x = 14,300,390,078.35
  5. Step 5: Solve for x
    x = 14,300,390,078.35/103,639.17
  6. Step 6: Final answer
    x = 137,982.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.