Home / 129,103.47-178,183.94-107,559.05

Finding the Fourth Proportional to 129,103.47, 178,183.94 and 107,559.05

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Solution

The fourth proportional to 129,103.47, 178,183.94 and 107,559.05 is: 148,449.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,103.47 : 178,183.94 = 107,559.05 : x
  2. Step 2: Convert to fraction form
    129,103.47/178,183.94 = 107,559.05/x
  3. Step 3: Cross multiply
    129,103.47x = 178,183.94 × 107,559.05
  4. Step 4: Simplify right side
    129,103.47x = 19,165,293,882.94
  5. Step 5: Solve for x
    x = 19,165,293,882.94/129,103.47
  6. Step 6: Final answer
    x = 148,449.10

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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.