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Finding the Fourth Proportional to 107,903.94, 161,836.31 and 28,999.71

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Solution

The fourth proportional to 107,903.94, 161,836.31 and 28,999.71 is: 43,494.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,903.94 : 161,836.31 = 28,999.71 : x
  2. Step 2: Convert to fraction form
    107,903.94/161,836.31 = 28,999.71/x
  3. Step 3: Cross multiply
    107,903.94x = 161,836.31 × 28,999.71
  4. Step 4: Simplify right side
    107,903.94x = 4,693,206,057.47
  5. Step 5: Solve for x
    x = 4,693,206,057.47/107,903.94
  6. Step 6: Final answer
    x = 43,494.30

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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.