Home / 103,669.37-155,485.21-28,770.69

Finding the Fourth Proportional to 103,669.37, 155,485.21 and 28,770.69

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Solution

The fourth proportional to 103,669.37, 155,485.21 and 28,770.69 is: 43,150.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,669.37 : 155,485.21 = 28,770.69 : x
  2. Step 2: Convert to fraction form
    103,669.37/155,485.21 = 28,770.69/x
  3. Step 3: Cross multiply
    103,669.37x = 155,485.21 × 28,770.69
  4. Step 4: Simplify right side
    103,669.37x = 4,473,416,776.49
  5. Step 5: Solve for x
    x = 4,473,416,776.49/103,669.37
  6. Step 6: Final answer
    x = 43,150.81

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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.