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Finding the Fourth Proportional to 148,451, 204,856.89 and 80,466.51

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Solution

The fourth proportional to 148,451, 204,856.89 and 80,466.51 is: 111,040.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,451 : 204,856.89 = 80,466.51 : x
  2. Step 2: Convert to fraction form
    148,451/204,856.89 = 80,466.51/x
  3. Step 3: Cross multiply
    148,451x = 204,856.89 × 80,466.51
  4. Step 4: Simplify right side
    148,451x = 16,484,118,987.75
  5. Step 5: Solve for x
    x = 16,484,118,987.75/148,451
  6. Step 6: Final answer
    x = 111,040.81

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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.