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Finding the Fourth Proportional to 108,365.63, 149,544.56 and 70,639.88

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Solution

The fourth proportional to 108,365.63, 149,544.56 and 70,639.88 is: 97,483.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,365.63 : 149,544.56 = 70,639.88 : x
  2. Step 2: Convert to fraction form
    108,365.63/149,544.56 = 70,639.88/x
  3. Step 3: Cross multiply
    108,365.63x = 149,544.56 × 70,639.88
  4. Step 4: Simplify right side
    108,365.63x = 10,563,809,201.93
  5. Step 5: Solve for x
    x = 10,563,809,201.93/108,365.63
  6. Step 6: Final answer
    x = 97,483.03

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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.