Home / 150,821.81-208,110.93-87,147.30

Finding the Fourth Proportional to 150,821.81, 208,110.93 and 87,147.30

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Solution

The fourth proportional to 150,821.81, 208,110.93 and 87,147.30 is: 120,249.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,821.81 : 208,110.93 = 87,147.30 : x
  2. Step 2: Convert to fraction form
    150,821.81/208,110.93 = 87,147.30/x
  3. Step 3: Cross multiply
    150,821.81x = 208,110.93 × 87,147.30
  4. Step 4: Simplify right side
    150,821.81x = 18,136,305,649.99
  5. Step 5: Solve for x
    x = 18,136,305,649.99/150,821.81
  6. Step 6: Final answer
    x = 120,249.89

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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.