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Finding the Fourth Proportional to 137,307.40, 205,961.10 and 130,892.20

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Solution

The fourth proportional to 137,307.40, 205,961.10 and 130,892.20 is: 196,338.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,307.40 : 205,961.10 = 130,892.20 : x
  2. Step 2: Convert to fraction form
    137,307.40/205,961.10 = 130,892.20/x
  3. Step 3: Cross multiply
    137,307.40x = 205,961.10 × 130,892.20
  4. Step 4: Simplify right side
    137,307.40x = 26,958,701,493.42
  5. Step 5: Solve for x
    x = 26,958,701,493.42/137,307.40
  6. Step 6: Final answer
    x = 196,338.30

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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.