Home / 140,190.87-210,319.46-45,420.90

Finding the Fourth Proportional to 140,190.87, 210,319.46 and 45,420.90

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Solution

The fourth proportional to 140,190.87, 210,319.46 and 45,420.90 is: 68,142.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,190.87 : 210,319.46 = 45,420.90 : x
  2. Step 2: Convert to fraction form
    140,190.87/210,319.46 = 45,420.90/x
  3. Step 3: Cross multiply
    140,190.87x = 210,319.46 × 45,420.90
  4. Step 4: Simplify right side
    140,190.87x = 9,552,899,327.96
  5. Step 5: Solve for x
    x = 9,552,899,327.96/140,190.87
  6. Step 6: Final answer
    x = 68,142.09

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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.