Home / 103,629.35-155,352.90-70,241.15

Finding the Fourth Proportional to 103,629.35, 155,352.90 and 70,241.15

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Solution

The fourth proportional to 103,629.35, 155,352.90 and 70,241.15 is: 105,299.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,629.35 : 155,352.90 = 70,241.15 : x
  2. Step 2: Convert to fraction form
    103,629.35/155,352.90 = 70,241.15/x
  3. Step 3: Cross multiply
    103,629.35x = 155,352.90 × 70,241.15
  4. Step 4: Simplify right side
    103,629.35x = 10,912,166,351.84
  5. Step 5: Solve for x
    x = 10,912,166,351.84/103,629.35
  6. Step 6: Final answer
    x = 105,299.96

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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.