Home / 130,620.93-195,986.87-71,387.40

Finding the Fourth Proportional to 130,620.93, 195,986.87 and 71,387.40

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Solution

The fourth proportional to 130,620.93, 195,986.87 and 71,387.40 is: 107,111.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,620.93 : 195,986.87 = 71,387.40 : x
  2. Step 2: Convert to fraction form
    130,620.93/195,986.87 = 71,387.40/x
  3. Step 3: Cross multiply
    130,620.93x = 195,986.87 × 71,387.40
  4. Step 4: Simplify right side
    130,620.93x = 13,990,993,729.15
  5. Step 5: Solve for x
    x = 13,990,993,729.15/130,620.93
  6. Step 6: Final answer
    x = 107,111.43

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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.