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Finding the Fourth Proportional to 103,908.34, 155,814.07 and 53,975.03

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Solution

The fourth proportional to 103,908.34, 155,814.07 and 53,975.03 is: 80,937.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,908.34 : 155,814.07 = 53,975.03 : x
  2. Step 2: Convert to fraction form
    103,908.34/155,814.07 = 53,975.03/x
  3. Step 3: Cross multiply
    103,908.34x = 155,814.07 × 53,975.03
  4. Step 4: Simplify right side
    103,908.34x = 8,410,068,443.26
  5. Step 5: Solve for x
    x = 8,410,068,443.26/103,908.34
  6. Step 6: Final answer
    x = 80,937.38

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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.