Home / 211,172.50-291,418.05-115,679.59

Finding the Fourth Proportional to 211,172.50, 291,418.05 and 115,679.59

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Solution

The fourth proportional to 211,172.50, 291,418.05 and 115,679.59 is: 159,637.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,172.50 : 291,418.05 = 115,679.59 : x
  2. Step 2: Convert to fraction form
    211,172.50/291,418.05 = 115,679.59/x
  3. Step 3: Cross multiply
    211,172.50x = 291,418.05 × 115,679.59
  4. Step 4: Simplify right side
    211,172.50x = 33,711,120,542.60
  5. Step 5: Solve for x
    x = 33,711,120,542.60/211,172.50
  6. Step 6: Final answer
    x = 159,637.83

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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.