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Finding the Fourth Proportional to 108,059.70, 148,943.94 and 72,236.64

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Solution

The fourth proportional to 108,059.70, 148,943.94 and 72,236.64 is: 99,567.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,059.70 : 148,943.94 = 72,236.64 : x
  2. Step 2: Convert to fraction form
    108,059.70/148,943.94 = 72,236.64/x
  3. Step 3: Cross multiply
    108,059.70x = 148,943.94 × 72,236.64
  4. Step 4: Simplify right side
    108,059.70x = 10,759,209,773.96
  5. Step 5: Solve for x
    x = 10,759,209,773.96/108,059.70
  6. Step 6: Final answer
    x = 99,567.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.