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Finding the Fourth Proportional to 99,493.10, 148,911.60 and 69,968.60

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Solution

The fourth proportional to 99,493.10, 148,911.60 and 69,968.60 is: 104,722.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,493.10 : 148,911.60 = 69,968.60 : x
  2. Step 2: Convert to fraction form
    99,493.10/148,911.60 = 69,968.60/x
  3. Step 3: Cross multiply
    99,493.10x = 148,911.60 × 69,968.60
  4. Step 4: Simplify right side
    99,493.10x = 10,419,136,175.76
  5. Step 5: Solve for x
    x = 10,419,136,175.76/99,493.10
  6. Step 6: Final answer
    x = 104,722.20

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1.5x scale

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.