Home / 103,418.91-154,984.85-47,121.43

Finding the Fourth Proportional to 103,418.91, 154,984.85 and 47,121.43

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Solution

The fourth proportional to 103,418.91, 154,984.85 and 47,121.43 is: 70,616.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,418.91 : 154,984.85 = 47,121.43 : x
  2. Step 2: Convert to fraction form
    103,418.91/154,984.85 = 47,121.43/x
  3. Step 3: Cross multiply
    103,418.91x = 154,984.85 × 47,121.43
  4. Step 4: Simplify right side
    103,418.91x = 7,303,107,760.34
  5. Step 5: Solve for x
    x = 7,303,107,760.34/103,418.91
  6. Step 6: Final answer
    x = 70,616.75

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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.