Home / 190,423.59-262,784.78-105,540.72

Finding the Fourth Proportional to 190,423.59, 262,784.78 and 105,540.72

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Solution

The fourth proportional to 190,423.59, 262,784.78 and 105,540.72 is: 145,646.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,423.59 : 262,784.78 = 105,540.72 : x
  2. Step 2: Convert to fraction form
    190,423.59/262,784.78 = 105,540.72/x
  3. Step 3: Cross multiply
    190,423.59x = 262,784.78 × 105,540.72
  4. Step 4: Simplify right side
    190,423.59x = 27,734,494,358.54
  5. Step 5: Solve for x
    x = 27,734,494,358.54/190,423.59
  6. Step 6: Final answer
    x = 145,646.32

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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.