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Finding the Fourth Proportional to 150,676.64, 207,962.43 and 99,690.38

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Solution

The fourth proportional to 150,676.64, 207,962.43 and 99,690.38 is: 137,591.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,676.64 : 207,962.43 = 99,690.38 : x
  2. Step 2: Convert to fraction form
    150,676.64/207,962.43 = 99,690.38/x
  3. Step 3: Cross multiply
    150,676.64x = 207,962.43 × 99,690.38
  4. Step 4: Simplify right side
    150,676.64x = 20,731,853,672.42
  5. Step 5: Solve for x
    x = 20,731,853,672.42/150,676.64
  6. Step 6: Final answer
    x = 137,591.69

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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.