Home / 138,610.36-191,281.26-108,426.52

Finding the Fourth Proportional to 138,610.36, 191,281.26 and 108,426.52

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Solution

The fourth proportional to 138,610.36, 191,281.26 and 108,426.52 is: 149,627.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,610.36 : 191,281.26 = 108,426.52 : x
  2. Step 2: Convert to fraction form
    138,610.36/191,281.26 = 108,426.52/x
  3. Step 3: Cross multiply
    138,610.36x = 191,281.26 × 108,426.52
  4. Step 4: Simplify right side
    138,610.36x = 20,739,961,363.02
  5. Step 5: Solve for x
    x = 20,739,961,363.02/138,610.36
  6. Step 6: Final answer
    x = 149,627.79

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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.