Home / 189,136.36-261,023.82-108,579.46

Finding the Fourth Proportional to 189,136.36, 261,023.82 and 108,579.46

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Solution

The fourth proportional to 189,136.36, 261,023.82 and 108,579.46 is: 149,848.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,136.36 : 261,023.82 = 108,579.46 : x
  2. Step 2: Convert to fraction form
    189,136.36/261,023.82 = 108,579.46/x
  3. Step 3: Cross multiply
    189,136.36x = 261,023.82 × 108,579.46
  4. Step 4: Simplify right side
    189,136.36x = 28,341,825,422.74
  5. Step 5: Solve for x
    x = 28,341,825,422.74/189,136.36
  6. Step 6: Final answer
    x = 149,848.64

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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.