Home / 189,664.38-261,740.60-103,628.70

Finding the Fourth Proportional to 189,664.38, 261,740.60 and 103,628.70

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Solution

The fourth proportional to 189,664.38, 261,740.60 and 103,628.70 is: 143,009.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,664.38 : 261,740.60 = 103,628.70 : x
  2. Step 2: Convert to fraction form
    189,664.38/261,740.60 = 103,628.70/x
  3. Step 3: Cross multiply
    189,664.38x = 261,740.60 × 103,628.70
  4. Step 4: Simplify right side
    189,664.38x = 27,123,838,115.22
  5. Step 5: Solve for x
    x = 27,123,838,115.22/189,664.38
  6. Step 6: Final answer
    x = 143,009.66

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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.