Home / 151,914.01-209,634.96-87,378.35

Finding the Fourth Proportional to 151,914.01, 209,634.96 and 87,378.35

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Solution

The fourth proportional to 151,914.01, 209,634.96 and 87,378.35 is: 120,578.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,914.01 : 209,634.96 = 87,378.35 : x
  2. Step 2: Convert to fraction form
    151,914.01/209,634.96 = 87,378.35/x
  3. Step 3: Cross multiply
    151,914.01x = 209,634.96 × 87,378.35
  4. Step 4: Simplify right side
    151,914.01x = 18,317,556,907.12
  5. Step 5: Solve for x
    x = 18,317,556,907.12/151,914.01
  6. Step 6: Final answer
    x = 120,578.46

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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.