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Finding the Fourth Proportional to 109,109.99, 150,486.29 and 74,675.09

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Solution

The fourth proportional to 109,109.99, 150,486.29 and 74,675.09 is: 102,993.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,109.99 : 150,486.29 = 74,675.09 : x
  2. Step 2: Convert to fraction form
    109,109.99/150,486.29 = 74,675.09/x
  3. Step 3: Cross multiply
    109,109.99x = 150,486.29 × 74,675.09
  4. Step 4: Simplify right side
    109,109.99x = 11,237,576,403.74
  5. Step 5: Solve for x
    x = 11,237,576,403.74/109,109.99
  6. Step 6: Final answer
    x = 102,993.11

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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.