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Finding the Fourth Proportional to 103,173.69, 154,795.15 and 39,995.87

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Solution

The fourth proportional to 103,173.69, 154,795.15 and 39,995.87 is: 60,007.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,173.69 : 154,795.15 = 39,995.87 : x
  2. Step 2: Convert to fraction form
    103,173.69/154,795.15 = 39,995.87/x
  3. Step 3: Cross multiply
    103,173.69x = 154,795.15 × 39,995.87
  4. Step 4: Simplify right side
    103,173.69x = 6,191,166,109.06
  5. Step 5: Solve for x
    x = 6,191,166,109.06/103,173.69
  6. Step 6: Final answer
    x = 60,007.22

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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.