Home / 103,300.87-142,639.23-84,183.46

Finding the Fourth Proportional to 103,300.87, 142,639.23 and 84,183.46

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Solution

The fourth proportional to 103,300.87, 142,639.23 and 84,183.46 is: 116,241.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,300.87 : 142,639.23 = 84,183.46 : x
  2. Step 2: Convert to fraction form
    103,300.87/142,639.23 = 84,183.46/x
  3. Step 3: Cross multiply
    103,300.87x = 142,639.23 × 84,183.46
  4. Step 4: Simplify right side
    103,300.87x = 12,007,863,913.14
  5. Step 5: Solve for x
    x = 12,007,863,913.14/103,300.87
  6. Step 6: Final answer
    x = 116,241.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.