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Finding the Fourth Proportional to 201,499.90, 302,249.79 and 138,127.90

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Solution

The fourth proportional to 201,499.90, 302,249.79 and 138,127.90 is: 207,191.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,499.90 : 302,249.79 = 138,127.90 : x
  2. Step 2: Convert to fraction form
    201,499.90/302,249.79 = 138,127.90/x
  3. Step 3: Cross multiply
    201,499.90x = 302,249.79 × 138,127.90
  4. Step 4: Simplify right side
    201,499.90x = 41,749,128,768.14
  5. Step 5: Solve for x
    x = 41,749,128,768.14/201,499.90
  6. Step 6: Final answer
    x = 207,191.81

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1.5x scale

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.