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Finding the Fourth Proportional to 108,446.96, 149,648.64 and 66,000.80

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Solution

The fourth proportional to 108,446.96, 149,648.64 and 66,000.80 is: 91,076.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,446.96 : 149,648.64 = 66,000.80 : x
  2. Step 2: Convert to fraction form
    108,446.96/149,648.64 = 66,000.80/x
  3. Step 3: Cross multiply
    108,446.96x = 149,648.64 × 66,000.80
  4. Step 4: Simplify right side
    108,446.96x = 9,876,929,958.91
  5. Step 5: Solve for x
    x = 9,876,929,958.91/108,446.96
  6. Step 6: Final answer
    x = 91,076.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.