Home / 145,515.57-200,809.42-81,853.35

Finding the Fourth Proportional to 145,515.57, 200,809.42 and 81,853.35

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Solution

The fourth proportional to 145,515.57, 200,809.42 and 81,853.35 is: 112,956.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,515.57 : 200,809.42 = 81,853.35 : x
  2. Step 2: Convert to fraction form
    145,515.57/200,809.42 = 81,853.35/x
  3. Step 3: Cross multiply
    145,515.57x = 200,809.42 × 81,853.35
  4. Step 4: Simplify right side
    145,515.57x = 16,436,923,738.56
  5. Step 5: Solve for x
    x = 16,436,923,738.56/145,515.57
  6. Step 6: Final answer
    x = 112,956.46

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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.