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Finding the Fourth Proportional to 103,137.27, 154,706.04 and 28,258.05

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Solution

The fourth proportional to 103,137.27, 154,706.04 and 28,258.05 is: 42,387.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,137.27 : 154,706.04 = 28,258.05 : x
  2. Step 2: Convert to fraction form
    103,137.27/154,706.04 = 28,258.05/x
  3. Step 3: Cross multiply
    103,137.27x = 154,706.04 × 28,258.05
  4. Step 4: Simplify right side
    103,137.27x = 4,371,691,013.62
  5. Step 5: Solve for x
    x = 4,371,691,013.62/103,137.27
  6. Step 6: Final answer
    x = 42,387.11

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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.