Home / 221,072.16-331,362-87,916.80

Finding the Fourth Proportional to 221,072.16, 331,362 and 87,916.80

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Solution

The fourth proportional to 221,072.16, 331,362 and 87,916.80 is: 131,777.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,072.16 : 331,362 = 87,916.80 : x
  2. Step 2: Convert to fraction form
    221,072.16/331,362 = 87,916.80/x
  3. Step 3: Cross multiply
    221,072.16x = 331,362 × 87,916.80
  4. Step 4: Simplify right side
    221,072.16x = 29,132,286,681.60
  5. Step 5: Solve for x
    x = 29,132,286,681.60/221,072.16
  6. Step 6: Final answer
    x = 131,777.27

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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.