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Finding the Fourth Proportional to 134,481.60, 201,722.40 and 99,489.60

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Solution

The fourth proportional to 134,481.60, 201,722.40 and 99,489.60 is: 149,234.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,481.60 : 201,722.40 = 99,489.60 : x
  2. Step 2: Convert to fraction form
    134,481.60/201,722.40 = 99,489.60/x
  3. Step 3: Cross multiply
    134,481.60x = 201,722.40 × 99,489.60
  4. Step 4: Simplify right side
    134,481.60x = 20,069,280,887.04
  5. Step 5: Solve for x
    x = 20,069,280,887.04/134,481.60
  6. Step 6: Final answer
    x = 149,234.40

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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.