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Finding the Fourth Proportional to 108,901.88, 163,361.02 and 30,015.42

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Solution

The fourth proportional to 108,901.88, 163,361.02 and 30,015.42 is: 45,025.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,901.88 : 163,361.02 = 30,015.42 : x
  2. Step 2: Convert to fraction form
    108,901.88/163,361.02 = 30,015.42/x
  3. Step 3: Cross multiply
    108,901.88x = 163,361.02 × 30,015.42
  4. Step 4: Simplify right side
    108,901.88x = 4,903,349,914.47
  5. Step 5: Solve for x
    x = 4,903,349,914.47/108,901.88
  6. Step 6: Final answer
    x = 45,025.39

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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.