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Finding the Fourth Proportional to 100,364.60, 150,374.10 and 84,812.60

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Solution

The fourth proportional to 100,364.60, 150,374.10 and 84,812.60 is: 127,072.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,364.60 : 150,374.10 = 84,812.60 : x
  2. Step 2: Convert to fraction form
    100,364.60/150,374.10 = 84,812.60/x
  3. Step 3: Cross multiply
    100,364.60x = 150,374.10 × 84,812.60
  4. Step 4: Simplify right side
    100,364.60x = 12,753,618,393.66
  5. Step 5: Solve for x
    x = 12,753,618,393.66/100,364.60
  6. Step 6: Final answer
    x = 127,072.88

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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.