Home / 129,640.29-194,460.38-40,900.74

Finding the Fourth Proportional to 129,640.29, 194,460.38 and 40,900.74

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Solution

The fourth proportional to 129,640.29, 194,460.38 and 40,900.74 is: 61,351.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,640.29 : 194,460.38 = 40,900.74 : x
  2. Step 2: Convert to fraction form
    129,640.29/194,460.38 = 40,900.74/x
  3. Step 3: Cross multiply
    129,640.29x = 194,460.38 × 40,900.74
  4. Step 4: Simplify right side
    129,640.29x = 7,953,572,662.33
  5. Step 5: Solve for x
    x = 7,953,572,662.33/129,640.29
  6. Step 6: Final answer
    x = 61,351.09

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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.