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Finding the Fourth Proportional to 117,974.84, 162,840.85 and 80,270.96

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Solution

The fourth proportional to 117,974.84, 162,840.85 and 80,270.96 is: 110,798.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,974.84 : 162,840.85 = 80,270.96 : x
  2. Step 2: Convert to fraction form
    117,974.84/162,840.85 = 80,270.96/x
  3. Step 3: Cross multiply
    117,974.84x = 162,840.85 × 80,270.96
  4. Step 4: Simplify right side
    117,974.84x = 13,071,391,356.72
  5. Step 5: Solve for x
    x = 13,071,391,356.72/117,974.84
  6. Step 6: Final answer
    x = 110,798.13

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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.