Home / 140,480.20-210,720.30-40,643.65

Finding the Fourth Proportional to 140,480.20, 210,720.30 and 40,643.65

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Solution

The fourth proportional to 140,480.20, 210,720.30 and 40,643.65 is: 60,965.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,480.20 : 210,720.30 = 40,643.65 : x
  2. Step 2: Convert to fraction form
    140,480.20/210,720.30 = 40,643.65/x
  3. Step 3: Cross multiply
    140,480.20x = 210,720.30 × 40,643.65
  4. Step 4: Simplify right side
    140,480.20x = 8,564,442,121.10
  5. Step 5: Solve for x
    x = 8,564,442,121.10/140,480.20
  6. Step 6: Final answer
    x = 60,965.48

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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.