Home / 129,309.75-193,964.67-40,570.20

Finding the Fourth Proportional to 129,309.75, 193,964.67 and 40,570.20

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Solution

The fourth proportional to 129,309.75, 193,964.67 and 40,570.20 is: 60,855.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,309.75 : 193,964.67 = 40,570.20 : x
  2. Step 2: Convert to fraction form
    129,309.75/193,964.67 = 40,570.20/x
  3. Step 3: Cross multiply
    129,309.75x = 193,964.67 × 40,570.20
  4. Step 4: Simplify right side
    129,309.75x = 7,869,185,454.83
  5. Step 5: Solve for x
    x = 7,869,185,454.83/129,309.75
  6. Step 6: Final answer
    x = 60,855.31

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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.