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Finding the Fourth Proportional to 103,203, 154,811.79 and 40,873.50

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Solution

The fourth proportional to 103,203, 154,811.79 and 40,873.50 is: 61,313.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,203 : 154,811.79 = 40,873.50 : x
  2. Step 2: Convert to fraction form
    103,203/154,811.79 = 40,873.50/x
  3. Step 3: Cross multiply
    103,203x = 154,811.79 × 40,873.50
  4. Step 4: Simplify right side
    103,203x = 6,327,699,698.57
  5. Step 5: Solve for x
    x = 6,327,699,698.57/103,203
  6. Step 6: Final answer
    x = 61,313.14

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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.