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Finding the Fourth Proportional to 103,454.36, 155,180.41 and 72,933.87

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Solution

The fourth proportional to 103,454.36, 155,180.41 and 72,933.87 is: 109,400.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,454.36 : 155,180.41 = 72,933.87 : x
  2. Step 2: Convert to fraction form
    103,454.36/155,180.41 = 72,933.87/x
  3. Step 3: Cross multiply
    103,454.36x = 155,180.41 × 72,933.87
  4. Step 4: Simplify right side
    103,454.36x = 11,317,907,376.19
  5. Step 5: Solve for x
    x = 11,317,907,376.19/103,454.36
  6. Step 6: Final answer
    x = 109,400.00

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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.