Home / 140,004.20-210,006.30-90,140.60

Finding the Fourth Proportional to 140,004.20, 210,006.30 and 90,140.60

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Solution

The fourth proportional to 140,004.20, 210,006.30 and 90,140.60 is: 135,210.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,004.20 : 210,006.30 = 90,140.60 : x
  2. Step 2: Convert to fraction form
    140,004.20/210,006.30 = 90,140.60/x
  3. Step 3: Cross multiply
    140,004.20x = 210,006.30 × 90,140.60
  4. Step 4: Simplify right side
    140,004.20x = 18,930,093,885.78
  5. Step 5: Solve for x
    x = 18,930,093,885.78/140,004.20
  6. Step 6: Final answer
    x = 135,210.90

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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.