Home / 103,020.21-154,506.07-28,122.55

Finding the Fourth Proportional to 103,020.21, 154,506.07 and 28,122.55

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Solution

The fourth proportional to 103,020.21, 154,506.07 and 28,122.55 is: 42,177.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,020.21 : 154,506.07 = 28,122.55 : x
  2. Step 2: Convert to fraction form
    103,020.21/154,506.07 = 28,122.55/x
  3. Step 3: Cross multiply
    103,020.21x = 154,506.07 × 28,122.55
  4. Step 4: Simplify right side
    103,020.21x = 4,345,104,678.88
  5. Step 5: Solve for x
    x = 4,345,104,678.88/103,020.21
  6. Step 6: Final answer
    x = 42,177.21

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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.