Home / 100,823.07-139,131.06-55,500.12

Finding the Fourth Proportional to 100,823.07, 139,131.06 and 55,500.12

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Solution

The fourth proportional to 100,823.07, 139,131.06 and 55,500.12 is: 76,587.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,823.07 : 139,131.06 = 55,500.12 : x
  2. Step 2: Convert to fraction form
    100,823.07/139,131.06 = 55,500.12/x
  3. Step 3: Cross multiply
    100,823.07x = 139,131.06 × 55,500.12
  4. Step 4: Simplify right side
    100,823.07x = 7,721,790,525.73
  5. Step 5: Solve for x
    x = 7,721,790,525.73/100,823.07
  6. Step 6: Final answer
    x = 76,587.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.