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Finding the Fourth Proportional to 194,579, 268,519.38 and 105,155

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Solution

The fourth proportional to 194,579, 268,519.38 and 105,155 is: 145,114.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,579 : 268,519.38 = 105,155 : x
  2. Step 2: Convert to fraction form
    194,579/268,519.38 = 105,155/x
  3. Step 3: Cross multiply
    194,579x = 268,519.38 × 105,155
  4. Step 4: Simplify right side
    194,579x = 28,236,155,403.90
  5. Step 5: Solve for x
    x = 28,236,155,403.90/194,579
  6. Step 6: Final answer
    x = 145,114.09

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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.