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Finding the Fourth Proportional to 251,705.88, 377,571.84 and 91,778.10

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Solution

The fourth proportional to 251,705.88, 377,571.84 and 91,778.10 is: 137,671.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,705.88 : 377,571.84 = 91,778.10 : x
  2. Step 2: Convert to fraction form
    251,705.88/377,571.84 = 91,778.10/x
  3. Step 3: Cross multiply
    251,705.88x = 377,571.84 × 91,778.10
  4. Step 4: Simplify right side
    251,705.88x = 34,652,826,088.70
  5. Step 5: Solve for x
    x = 34,652,826,088.70/251,705.88
  6. Step 6: Final answer
    x = 137,671.90

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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.