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Finding the Fourth Proportional to 170,480.42, 255,665.30 and 80,509.22

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Solution

The fourth proportional to 170,480.42, 255,665.30 and 80,509.22 is: 120,737.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,480.42 : 255,665.30 = 80,509.22 : x
  2. Step 2: Convert to fraction form
    170,480.42/255,665.30 = 80,509.22/x
  3. Step 3: Cross multiply
    170,480.42x = 255,665.30 × 80,509.22
  4. Step 4: Simplify right side
    170,480.42x = 20,583,413,884.07
  5. Step 5: Solve for x
    x = 20,583,413,884.07/170,480.42
  6. Step 6: Final answer
    x = 120,737.70

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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.