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Finding the Fourth Proportional to 170,344.92, 255,323.60 and 103,638

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Solution

The fourth proportional to 170,344.92, 255,323.60 and 103,638 is: 155,339.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,344.92 : 255,323.60 = 103,638 : x
  2. Step 2: Convert to fraction form
    170,344.92/255,323.60 = 103,638/x
  3. Step 3: Cross multiply
    170,344.92x = 255,323.60 × 103,638
  4. Step 4: Simplify right side
    170,344.92x = 26,461,227,256.80
  5. Step 5: Solve for x
    x = 26,461,227,256.80/170,344.92
  6. Step 6: Final answer
    x = 155,339.10

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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.