Home / 103,240.48-154,860.34-68,171.80

Finding the Fourth Proportional to 103,240.48, 154,860.34 and 68,171.80

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Solution

The fourth proportional to 103,240.48, 154,860.34 and 68,171.80 is: 102,257.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,240.48 : 154,860.34 = 68,171.80 : x
  2. Step 2: Convert to fraction form
    103,240.48/154,860.34 = 68,171.80/x
  3. Step 3: Cross multiply
    103,240.48x = 154,860.34 × 68,171.80
  4. Step 4: Simplify right side
    103,240.48x = 10,557,108,126.41
  5. Step 5: Solve for x
    x = 10,557,108,126.41/103,240.48
  6. Step 6: Final answer
    x = 102,257.45

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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.