Home / 189,154.58-261,028.40-103,115.27

Finding the Fourth Proportional to 189,154.58, 261,028.40 and 103,115.27

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Solution

The fourth proportional to 189,154.58, 261,028.40 and 103,115.27 is: 142,296.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,154.58 : 261,028.40 = 103,115.27 : x
  2. Step 2: Convert to fraction form
    189,154.58/261,028.40 = 103,115.27/x
  3. Step 3: Cross multiply
    189,154.58x = 261,028.40 × 103,115.27
  4. Step 4: Simplify right side
    189,154.58x = 26,916,012,122.95
  5. Step 5: Solve for x
    x = 26,916,012,122.95/189,154.58
  6. Step 6: Final answer
    x = 142,296.38

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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.