Home / 89,214.48-122,806.92-77,109.40

Finding the Fourth Proportional to 89,214.48, 122,806.92 and 77,109.40

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Solution

The fourth proportional to 89,214.48, 122,806.92 and 77,109.40 is: 106,143.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,214.48 : 122,806.92 = 77,109.40 : x
  2. Step 2: Convert to fraction form
    89,214.48/122,806.92 = 77,109.40/x
  3. Step 3: Cross multiply
    89,214.48x = 122,806.92 × 77,109.40
  4. Step 4: Simplify right side
    89,214.48x = 9,469,567,917.05
  5. Step 5: Solve for x
    x = 9,469,567,917.05/89,214.48
  6. Step 6: Final answer
    x = 106,143.84

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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.