Home / 103,529.25-155,297.32-28,643.12

Finding the Fourth Proportional to 103,529.25, 155,297.32 and 28,643.12

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Solution

The fourth proportional to 103,529.25, 155,297.32 and 28,643.12 is: 42,965.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,529.25 : 155,297.32 = 28,643.12 : x
  2. Step 2: Convert to fraction form
    103,529.25/155,297.32 = 28,643.12/x
  3. Step 3: Cross multiply
    103,529.25x = 155,297.32 × 28,643.12
  4. Step 4: Simplify right side
    103,529.25x = 4,448,199,772.44
  5. Step 5: Solve for x
    x = 4,448,199,772.44/103,529.25
  6. Step 6: Final answer
    x = 42,965.63

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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.