Home / 158,408.22-218,609.37-90,436.26

Finding the Fourth Proportional to 158,408.22, 218,609.37 and 90,436.26

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Solution

The fourth proportional to 158,408.22, 218,609.37 and 90,436.26 is: 124,805.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,408.22 : 218,609.37 = 90,436.26 : x
  2. Step 2: Convert to fraction form
    158,408.22/218,609.37 = 90,436.26/x
  3. Step 3: Cross multiply
    158,408.22x = 218,609.37 × 90,436.26
  4. Step 4: Simplify right side
    158,408.22x = 19,770,213,823.76
  5. Step 5: Solve for x
    x = 19,770,213,823.76/158,408.22
  6. Step 6: Final answer
    x = 124,805.48

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1.5x scale

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.