Home / 103,830.45-143,286.03-56,083.80

Finding the Fourth Proportional to 103,830.45, 143,286.03 and 56,083.80

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Solution

The fourth proportional to 103,830.45, 143,286.03 and 56,083.80 is: 77,395.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,830.45 : 143,286.03 = 56,083.80 : x
  2. Step 2: Convert to fraction form
    103,830.45/143,286.03 = 56,083.80/x
  3. Step 3: Cross multiply
    103,830.45x = 143,286.03 × 56,083.80
  4. Step 4: Simplify right side
    103,830.45x = 8,036,025,453.07
  5. Step 5: Solve for x
    x = 8,036,025,453.07/103,830.45
  6. Step 6: Final answer
    x = 77,395.65

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1.5x scale

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.