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Finding the Fourth Proportional to 100,558.94, 150,836.55 and 84,864.78

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Solution

The fourth proportional to 100,558.94, 150,836.55 and 84,864.78 is: 127,295.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,558.94 : 150,836.55 = 84,864.78 : x
  2. Step 2: Convert to fraction form
    100,558.94/150,836.55 = 84,864.78/x
  3. Step 3: Cross multiply
    100,558.94x = 150,836.55 × 84,864.78
  4. Step 4: Simplify right side
    100,558.94x = 12,800,710,631.71
  5. Step 5: Solve for x
    x = 12,800,710,631.71/100,558.94
  6. Step 6: Final answer
    x = 127,295.61

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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.