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Finding the Fourth Proportional to 170,686.45, 256,103.48 and 65,480.81

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Solution

The fourth proportional to 170,686.45, 256,103.48 and 65,480.81 is: 98,249.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,686.45 : 256,103.48 = 65,480.81 : x
  2. Step 2: Convert to fraction form
    170,686.45/256,103.48 = 65,480.81/x
  3. Step 3: Cross multiply
    170,686.45x = 256,103.48 × 65,480.81
  4. Step 4: Simplify right side
    170,686.45x = 16,769,864,118.18
  5. Step 5: Solve for x
    x = 16,769,864,118.18/170,686.45
  6. Step 6: Final answer
    x = 98,249.54

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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.