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Finding the Fourth Proportional to 170,342.92, 255,320.60 and 103,636

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Solution

The fourth proportional to 170,342.92, 255,320.60 and 103,636 is: 155,336.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,342.92 : 255,320.60 = 103,636 : x
  2. Step 2: Convert to fraction form
    170,342.92/255,320.60 = 103,636/x
  3. Step 3: Cross multiply
    170,342.92x = 255,320.60 × 103,636
  4. Step 4: Simplify right side
    170,342.92x = 26,460,405,701.60
  5. Step 5: Solve for x
    x = 26,460,405,701.60/170,342.92
  6. Step 6: Final answer
    x = 155,336.10

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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.