Home / 116,771.86-161,136.03-65,782.36

Finding the Fourth Proportional to 116,771.86, 161,136.03 and 65,782.36

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Solution

The fourth proportional to 116,771.86, 161,136.03 and 65,782.36 is: 90,774.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,771.86 : 161,136.03 = 65,782.36 : x
  2. Step 2: Convert to fraction form
    116,771.86/161,136.03 = 65,782.36/x
  3. Step 3: Cross multiply
    116,771.86x = 161,136.03 × 65,782.36
  4. Step 4: Simplify right side
    116,771.86x = 10,599,908,334.43
  5. Step 5: Solve for x
    x = 10,599,908,334.43/116,771.86
  6. Step 6: Final answer
    x = 90,774.51

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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.