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Finding the Fourth Proportional to 170,319.36, 255,480.96 and 65,143.68

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Solution

The fourth proportional to 170,319.36, 255,480.96 and 65,143.68 is: 97,716.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,319.36 : 255,480.96 = 65,143.68 : x
  2. Step 2: Convert to fraction form
    170,319.36/255,480.96 = 65,143.68/x
  3. Step 3: Cross multiply
    170,319.36x = 255,480.96 × 65,143.68
  4. Step 4: Simplify right side
    170,319.36x = 16,642,969,904.33
  5. Step 5: Solve for x
    x = 16,642,969,904.33/170,319.36
  6. Step 6: Final answer
    x = 97,716.25

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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.