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Finding the Fourth Proportional to 100,562.56, 138,823.50 and 58,112.80

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Solution

The fourth proportional to 100,562.56, 138,823.50 and 58,112.80 is: 80,222.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,562.56 : 138,823.50 = 58,112.80 : x
  2. Step 2: Convert to fraction form
    100,562.56/138,823.50 = 58,112.80/x
  3. Step 3: Cross multiply
    100,562.56x = 138,823.50 × 58,112.80
  4. Step 4: Simplify right side
    100,562.56x = 8,067,422,290.80
  5. Step 5: Solve for x
    x = 8,067,422,290.80/100,562.56
  6. Step 6: Final answer
    x = 80,222.92

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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.