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Finding the Fourth Proportional to 148,855.49, 205,422.91 and 80,873.81

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Solution

The fourth proportional to 148,855.49, 205,422.91 and 80,873.81 is: 111,607.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,855.49 : 205,422.91 = 80,873.81 : x
  2. Step 2: Convert to fraction form
    148,855.49/205,422.91 = 80,873.81/x
  3. Step 3: Cross multiply
    148,855.49x = 205,422.91 × 80,873.81
  4. Step 4: Simplify right side
    148,855.49x = 16,613,333,190.80
  5. Step 5: Solve for x
    x = 16,613,333,190.80/148,855.49
  6. Step 6: Final answer
    x = 111,607.12

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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.