Home / 190,318.76-262,620.78-105,419.96

Finding the Fourth Proportional to 190,318.76, 262,620.78 and 105,419.96

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Solution

The fourth proportional to 190,318.76, 262,620.78 and 105,419.96 is: 145,468.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,318.76 : 262,620.78 = 105,419.96 : x
  2. Step 2: Convert to fraction form
    190,318.76/262,620.78 = 105,419.96/x
  3. Step 3: Cross multiply
    190,318.76x = 262,620.78 × 105,419.96
  4. Step 4: Simplify right side
    190,318.76x = 27,685,472,122.77
  5. Step 5: Solve for x
    x = 27,685,472,122.77/190,318.76
  6. Step 6: Final answer
    x = 145,468.96

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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.