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Finding the Fourth Proportional to 168,423.12, 232,422.48 and 92,970

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Solution

The fourth proportional to 168,423.12, 232,422.48 and 92,970 is: 128,297.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,423.12 : 232,422.48 = 92,970 : x
  2. Step 2: Convert to fraction form
    168,423.12/232,422.48 = 92,970/x
  3. Step 3: Cross multiply
    168,423.12x = 232,422.48 × 92,970
  4. Step 4: Simplify right side
    168,423.12x = 21,608,317,965.60
  5. Step 5: Solve for x
    x = 21,608,317,965.60/168,423.12
  6. Step 6: Final answer
    x = 128,297.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.