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Finding the Fourth Proportional to 132,090.10, 198,220.20 and 72,968.20

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Solution

The fourth proportional to 132,090.10, 198,220.20 and 72,968.20 is: 109,499.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,090.10 : 198,220.20 = 72,968.20 : x
  2. Step 2: Convert to fraction form
    132,090.10/198,220.20 = 72,968.20/x
  3. Step 3: Cross multiply
    132,090.10x = 198,220.20 × 72,968.20
  4. Step 4: Simplify right side
    132,090.10x = 14,463,771,197.64
  5. Step 5: Solve for x
    x = 14,463,771,197.64/132,090.10
  6. Step 6: Final answer
    x = 109,499.28

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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.