Home / 73,143.14-109,718.98-20,556.72

Finding the Fourth Proportional to 73,143.14, 109,718.98 and 20,556.72

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Solution

The fourth proportional to 73,143.14, 109,718.98 and 20,556.72 is: 30,836.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,143.14 : 109,718.98 = 20,556.72 : x
  2. Step 2: Convert to fraction form
    73,143.14/109,718.98 = 20,556.72/x
  3. Step 3: Cross multiply
    73,143.14x = 109,718.98 × 20,556.72
  4. Step 4: Simplify right side
    73,143.14x = 2,255,462,350.55
  5. Step 5: Solve for x
    x = 2,255,462,350.55/73,143.14
  6. Step 6: Final answer
    x = 30,836.28

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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.