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Finding the Fourth Proportional to 125,754.84, 173,453.81 and 85,398.54

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Solution

The fourth proportional to 125,754.84, 173,453.81 and 85,398.54 is: 117,790.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,754.84 : 173,453.81 = 85,398.54 : x
  2. Step 2: Convert to fraction form
    125,754.84/173,453.81 = 85,398.54/x
  3. Step 3: Cross multiply
    125,754.84x = 173,453.81 × 85,398.54
  4. Step 4: Simplify right side
    125,754.84x = 14,812,701,704.44
  5. Step 5: Solve for x
    x = 14,812,701,704.44/125,754.84
  6. Step 6: Final answer
    x = 117,790.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.