Home / 100,501.48-138,693.78-55,181.37

Finding the Fourth Proportional to 100,501.48, 138,693.78 and 55,181.37

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Solution

The fourth proportional to 100,501.48, 138,693.78 and 55,181.37 is: 76,151.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,501.48 : 138,693.78 = 55,181.37 : x
  2. Step 2: Convert to fraction form
    100,501.48/138,693.78 = 55,181.37/x
  3. Step 3: Cross multiply
    100,501.48x = 138,693.78 × 55,181.37
  4. Step 4: Simplify right side
    100,501.48x = 7,653,312,790.88
  5. Step 5: Solve for x
    x = 7,653,312,790.88/100,501.48
  6. Step 6: Final answer
    x = 76,151.24

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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.