Home / 148,005.26-221,869.11-72,087.20

Finding the Fourth Proportional to 148,005.26, 221,869.11 and 72,087.20

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Solution

The fourth proportional to 148,005.26, 221,869.11 and 72,087.20 is: 108,063.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,005.26 : 221,869.11 = 72,087.20 : x
  2. Step 2: Convert to fraction form
    148,005.26/221,869.11 = 72,087.20/x
  3. Step 3: Cross multiply
    148,005.26x = 221,869.11 × 72,087.20
  4. Step 4: Simplify right side
    148,005.26x = 15,993,922,906.39
  5. Step 5: Solve for x
    x = 15,993,922,906.39/148,005.26
  6. Step 6: Final answer
    x = 108,063.21

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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.