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Finding the Fourth Proportional to 148,251.94, 221,999.01 and 81,618.82

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Solution

The fourth proportional to 148,251.94, 221,999.01 and 81,618.82 is: 122,219.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,251.94 : 221,999.01 = 81,618.82 : x
  2. Step 2: Convert to fraction form
    148,251.94/221,999.01 = 81,618.82/x
  3. Step 3: Cross multiply
    148,251.94x = 221,999.01 × 81,618.82
  4. Step 4: Simplify right side
    148,251.94x = 18,119,297,237.37
  5. Step 5: Solve for x
    x = 18,119,297,237.37/148,251.94
  6. Step 6: Final answer
    x = 122,219.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.