Home / 90,004.20-135,152.10-50,638.20

Finding the Fourth Proportional to 90,004.20, 135,152.10 and 50,638.20

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Solution

The fourth proportional to 90,004.20, 135,152.10 and 50,638.20 is: 76,039.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,004.20 : 135,152.10 = 50,638.20 : x
  2. Step 2: Convert to fraction form
    90,004.20/135,152.10 = 50,638.20/x
  3. Step 3: Cross multiply
    90,004.20x = 135,152.10 × 50,638.20
  4. Step 4: Simplify right side
    90,004.20x = 6,843,859,070.22
  5. Step 5: Solve for x
    x = 6,843,859,070.22/90,004.20
  6. Step 6: Final answer
    x = 76,039.33

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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.