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Finding the Fourth Proportional to 103,207.70, 154,811.55 and 33,137.30

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Solution

The fourth proportional to 103,207.70, 154,811.55 and 33,137.30 is: 49,705.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,207.70 : 154,811.55 = 33,137.30 : x
  2. Step 2: Convert to fraction form
    103,207.70/154,811.55 = 33,137.30/x
  3. Step 3: Cross multiply
    103,207.70x = 154,811.55 × 33,137.30
  4. Step 4: Simplify right side
    103,207.70x = 5,130,036,775.82
  5. Step 5: Solve for x
    x = 5,130,036,775.82/103,207.70
  6. Step 6: Final answer
    x = 49,705.95

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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.