Home / 103,856.80-155,777.10-40,664.65

Finding the Fourth Proportional to 103,856.80, 155,777.10 and 40,664.65

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Solution

The fourth proportional to 103,856.80, 155,777.10 and 40,664.65 is: 60,993.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,856.80 : 155,777.10 = 40,664.65 : x
  2. Step 2: Convert to fraction form
    103,856.80/155,777.10 = 40,664.65/x
  3. Step 3: Cross multiply
    103,856.80x = 155,777.10 × 40,664.65
  4. Step 4: Simplify right side
    103,856.80x = 6,334,621,249.52
  5. Step 5: Solve for x
    x = 6,334,621,249.52/103,856.80
  6. Step 6: Final answer
    x = 60,993.80

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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.