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Finding the Fourth Proportional to 148,155, 204,454.44 and 81,087

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Solution

The fourth proportional to 148,155, 204,454.44 and 81,087 is: 111,900.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,155 : 204,454.44 = 81,087 : x
  2. Step 2: Convert to fraction form
    148,155/204,454.44 = 81,087/x
  3. Step 3: Cross multiply
    148,155x = 204,454.44 × 81,087
  4. Step 4: Simplify right side
    148,155x = 16,578,597,176.28
  5. Step 5: Solve for x
    x = 16,578,597,176.28/148,155
  6. Step 6: Final answer
    x = 111,900.36

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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.