Home / 103,639.14-155,441.32-28,766.89

Finding the Fourth Proportional to 103,639.14, 155,441.32 and 28,766.89

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Solution

The fourth proportional to 103,639.14, 155,441.32 and 28,766.89 is: 43,145.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,639.14 : 155,441.32 = 28,766.89 : x
  2. Step 2: Convert to fraction form
    103,639.14/155,441.32 = 28,766.89/x
  3. Step 3: Cross multiply
    103,639.14x = 155,441.32 × 28,766.89
  4. Step 4: Simplify right side
    103,639.14x = 4,471,563,353.89
  5. Step 5: Solve for x
    x = 4,471,563,353.89/103,639.14
  6. Step 6: Final answer
    x = 43,145.51

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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.