Home / 108,729.08-162,907.64-85,027.56

Finding the Fourth Proportional to 108,729.08, 162,907.64 and 85,027.56

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Solution

The fourth proportional to 108,729.08, 162,907.64 and 85,027.56 is: 127,395.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,729.08 : 162,907.64 = 85,027.56 : x
  2. Step 2: Convert to fraction form
    108,729.08/162,907.64 = 85,027.56/x
  3. Step 3: Cross multiply
    108,729.08x = 162,907.64 × 85,027.56
  4. Step 4: Simplify right side
    108,729.08x = 13,851,639,134.56
  5. Step 5: Solve for x
    x = 13,851,639,134.56/108,729.08
  6. Step 6: Final answer
    x = 127,395.90

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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.