Home / 90,253.77-135,401.42-30,290.20

Finding the Fourth Proportional to 90,253.77, 135,401.42 and 30,290.20

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Solution

The fourth proportional to 90,253.77, 135,401.42 and 30,290.20 is: 45,442.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,253.77 : 135,401.42 = 30,290.20 : x
  2. Step 2: Convert to fraction form
    90,253.77/135,401.42 = 30,290.20/x
  3. Step 3: Cross multiply
    90,253.77x = 135,401.42 × 30,290.20
  4. Step 4: Simplify right side
    90,253.77x = 4,101,335,940.63
  5. Step 5: Solve for x
    x = 4,101,335,940.63/90,253.77
  6. Step 6: Final answer
    x = 45,442.27

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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.