Home / 129,423.44-178,637.62-100,736.48

Finding the Fourth Proportional to 129,423.44, 178,637.62 and 100,736.48

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Solution

The fourth proportional to 129,423.44, 178,637.62 and 100,736.48 is: 139,042.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,423.44 : 178,637.62 = 100,736.48 : x
  2. Step 2: Convert to fraction form
    129,423.44/178,637.62 = 100,736.48/x
  3. Step 3: Cross multiply
    129,423.44x = 178,637.62 × 100,736.48
  4. Step 4: Simplify right side
    129,423.44x = 17,995,325,034.38
  5. Step 5: Solve for x
    x = 17,995,325,034.38/129,423.44
  6. Step 6: Final answer
    x = 139,042.24

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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.