Home / 105,917.70-159,453.60-91,454.34

Finding the Fourth Proportional to 105,917.70, 159,453.60 and 91,454.34

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Solution

The fourth proportional to 105,917.70, 159,453.60 and 91,454.34 is: 137,679.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,917.70 : 159,453.60 = 91,454.34 : x
  2. Step 2: Convert to fraction form
    105,917.70/159,453.60 = 91,454.34/x
  3. Step 3: Cross multiply
    105,917.70x = 159,453.60 × 91,454.34
  4. Step 4: Simplify right side
    105,917.70x = 14,582,723,748.62
  5. Step 5: Solve for x
    x = 14,582,723,748.62/105,917.70
  6. Step 6: Final answer
    x = 137,679.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.