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Finding the Fourth Proportional to 170,863.60, 256,295.40 and 111,881.20

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Solution

The fourth proportional to 170,863.60, 256,295.40 and 111,881.20 is: 167,821.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,863.60 : 256,295.40 = 111,881.20 : x
  2. Step 2: Convert to fraction form
    170,863.60/256,295.40 = 111,881.20/x
  3. Step 3: Cross multiply
    170,863.60x = 256,295.40 × 111,881.20
  4. Step 4: Simplify right side
    170,863.60x = 28,674,636,906.48
  5. Step 5: Solve for x
    x = 28,674,636,906.48/170,863.60
  6. Step 6: Final answer
    x = 167,821.80

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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.