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Finding the Fourth Proportional to 130,730.88, 195,914.88 and 68,276.64

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Solution

The fourth proportional to 130,730.88, 195,914.88 and 68,276.64 is: 102,320.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,730.88 : 195,914.88 = 68,276.64 : x
  2. Step 2: Convert to fraction form
    130,730.88/195,914.88 = 68,276.64/x
  3. Step 3: Cross multiply
    130,730.88x = 195,914.88 × 68,276.64
  4. Step 4: Simplify right side
    130,730.88x = 13,376,409,732.40
  5. Step 5: Solve for x
    x = 13,376,409,732.40/130,730.88
  6. Step 6: Final answer
    x = 102,320.20

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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.