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Finding the Fourth Proportional to 99,052.80, 148,579.20 and 65,664.60

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Solution

The fourth proportional to 99,052.80, 148,579.20 and 65,664.60 is: 98,496.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,052.80 : 148,579.20 = 65,664.60 : x
  2. Step 2: Convert to fraction form
    99,052.80/148,579.20 = 65,664.60/x
  3. Step 3: Cross multiply
    99,052.80x = 148,579.20 × 65,664.60
  4. Step 4: Simplify right side
    99,052.80x = 9,756,393,736.32
  5. Step 5: Solve for x
    x = 9,756,393,736.32/99,052.80
  6. Step 6: Final answer
    x = 98,496.90

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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.