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Finding the Fourth Proportional to 103,299.53, 154,928.89 and 28,400.36

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Solution

The fourth proportional to 103,299.53, 154,928.89 and 28,400.36 is: 42,594.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,299.53 : 154,928.89 = 28,400.36 : x
  2. Step 2: Convert to fraction form
    103,299.53/154,928.89 = 28,400.36/x
  3. Step 3: Cross multiply
    103,299.53x = 154,928.89 × 28,400.36
  4. Step 4: Simplify right side
    103,299.53x = 4,400,036,250.40
  5. Step 5: Solve for x
    x = 4,400,036,250.40/103,299.53
  6. Step 6: Final answer
    x = 42,594.93

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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.