Home / 189,380.10-261,343.81-103,338.33

Finding the Fourth Proportional to 189,380.10, 261,343.81 and 103,338.33

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Solution

The fourth proportional to 189,380.10, 261,343.81 and 103,338.33 is: 142,606.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,380.10 : 261,343.81 = 103,338.33 : x
  2. Step 2: Convert to fraction form
    189,380.10/261,343.81 = 103,338.33/x
  3. Step 3: Cross multiply
    189,380.10x = 261,343.81 × 103,338.33
  4. Step 4: Simplify right side
    189,380.10x = 27,006,832,881.24
  5. Step 5: Solve for x
    x = 27,006,832,881.24/189,380.10
  6. Step 6: Final answer
    x = 142,606.50

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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.