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Finding the Fourth Proportional to 100,558.43, 150,835.81 and 84,864.27

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Solution

The fourth proportional to 100,558.43, 150,835.81 and 84,864.27 is: 127,294.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,558.43 : 150,835.81 = 84,864.27 : x
  2. Step 2: Convert to fraction form
    100,558.43/150,835.81 = 84,864.27/x
  3. Step 3: Cross multiply
    100,558.43x = 150,835.81 × 84,864.27
  4. Step 4: Simplify right side
    100,558.43x = 12,800,570,905.51
  5. Step 5: Solve for x
    x = 12,800,570,905.51/100,558.43
  6. Step 6: Final answer
    x = 127,294.86

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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.