Home / 158,112.21-236,788.28-90,439.09

Finding the Fourth Proportional to 158,112.21, 236,788.28 and 90,439.09

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Solution

The fourth proportional to 158,112.21, 236,788.28 and 90,439.09 is: 135,441.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,112.21 : 236,788.28 = 90,439.09 : x
  2. Step 2: Convert to fraction form
    158,112.21/236,788.28 = 90,439.09/x
  3. Step 3: Cross multiply
    158,112.21x = 236,788.28 × 90,439.09
  4. Step 4: Simplify right side
    158,112.21x = 21,414,916,748.80
  5. Step 5: Solve for x
    x = 21,414,916,748.80/158,112.21
  6. Step 6: Final answer
    x = 135,441.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.