Home / 105,279.14-145,286.19-57,533.49

Finding the Fourth Proportional to 105,279.14, 145,286.19 and 57,533.49

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Solution

The fourth proportional to 105,279.14, 145,286.19 and 57,533.49 is: 79,396.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,279.14 : 145,286.19 = 57,533.49 : x
  2. Step 2: Convert to fraction form
    105,279.14/145,286.19 = 57,533.49/x
  3. Step 3: Cross multiply
    105,279.14x = 145,286.19 × 57,533.49
  4. Step 4: Simplify right side
    105,279.14x = 8,358,821,559.50
  5. Step 5: Solve for x
    x = 8,358,821,559.50/105,279.14
  6. Step 6: Final answer
    x = 79,396.75

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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.