Home / 148,983.21-205,600.86-81,004.77

Finding the Fourth Proportional to 148,983.21, 205,600.86 and 81,004.77

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Solution

The fourth proportional to 148,983.21, 205,600.86 and 81,004.77 is: 111,788.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,983.21 : 205,600.86 = 81,004.77 : x
  2. Step 2: Convert to fraction form
    148,983.21/205,600.86 = 81,004.77/x
  3. Step 3: Cross multiply
    148,983.21x = 205,600.86 × 81,004.77
  4. Step 4: Simplify right side
    148,983.21x = 16,654,650,376.10
  5. Step 5: Solve for x
    x = 16,654,650,376.10/148,983.21
  6. Step 6: Final answer
    x = 111,788.77

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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.