Home / 115,039.67-172,329.75-91,387.26

Finding the Fourth Proportional to 115,039.67, 172,329.75 and 91,387.26

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Solution

The fourth proportional to 115,039.67, 172,329.75 and 91,387.26 is: 136,898.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,039.67 : 172,329.75 = 91,387.26 : x
  2. Step 2: Convert to fraction form
    115,039.67/172,329.75 = 91,387.26/x
  3. Step 3: Cross multiply
    115,039.67x = 172,329.75 × 91,387.26
  4. Step 4: Simplify right side
    115,039.67x = 15,748,743,668.99
  5. Step 5: Solve for x
    x = 15,748,743,668.99/115,039.67
  6. Step 6: Final answer
    x = 136,898.38

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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.