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Finding the Fourth Proportional to 130,610.88, 195,734.88 and 68,156.64

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Solution

The fourth proportional to 130,610.88, 195,734.88 and 68,156.64 is: 102,140.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,610.88 : 195,734.88 = 68,156.64 : x
  2. Step 2: Convert to fraction form
    130,610.88/195,734.88 = 68,156.64/x
  3. Step 3: Cross multiply
    130,610.88x = 195,734.88 × 68,156.64
  4. Step 4: Simplify right side
    130,610.88x = 13,340,631,751.60
  5. Step 5: Solve for x
    x = 13,340,631,751.60/130,610.88
  6. Step 6: Final answer
    x = 102,140.28

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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.