Home / 100,427.52-138,585.30-55,104.48

Finding the Fourth Proportional to 100,427.52, 138,585.30 and 55,104.48

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Solution

The fourth proportional to 100,427.52, 138,585.30 and 55,104.48 is: 76,041.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,427.52 : 138,585.30 = 55,104.48 : x
  2. Step 2: Convert to fraction form
    100,427.52/138,585.30 = 55,104.48/x
  3. Step 3: Cross multiply
    100,427.52x = 138,585.30 × 55,104.48
  4. Step 4: Simplify right side
    100,427.52x = 7,636,670,892.14
  5. Step 5: Solve for x
    x = 7,636,670,892.14/100,427.52
  6. Step 6: Final answer
    x = 76,041.62

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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.