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Finding the Fourth Proportional to 118,927.45, 164,119.80 and 65,213.38

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Solution

The fourth proportional to 118,927.45, 164,119.80 and 65,213.38 is: 89,994.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,927.45 : 164,119.80 = 65,213.38 : x
  2. Step 2: Convert to fraction form
    118,927.45/164,119.80 = 65,213.38/x
  3. Step 3: Cross multiply
    118,927.45x = 164,119.80 × 65,213.38
  4. Step 4: Simplify right side
    118,927.45x = 10,702,806,882.92
  5. Step 5: Solve for x
    x = 10,702,806,882.92/118,927.45
  6. Step 6: Final answer
    x = 89,994.42

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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.