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Finding the Fourth Proportional to 170,163.99, 255,403.53 and 85,983.39

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Solution

The fourth proportional to 170,163.99, 255,403.53 and 85,983.39 is: 129,054.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,163.99 : 255,403.53 = 85,983.39 : x
  2. Step 2: Convert to fraction form
    170,163.99/255,403.53 = 85,983.39/x
  3. Step 3: Cross multiply
    170,163.99x = 255,403.53 × 85,983.39
  4. Step 4: Simplify right side
    170,163.99x = 21,960,461,327.37
  5. Step 5: Solve for x
    x = 21,960,461,327.37/170,163.99
  6. Step 6: Final answer
    x = 129,054.69

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1.5x scale

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.