Home / 135,104.14-186,431.58-77,728.24

Finding the Fourth Proportional to 135,104.14, 186,431.58 and 77,728.24

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Solution

The fourth proportional to 135,104.14, 186,431.58 and 77,728.24 is: 107,257.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,104.14 : 186,431.58 = 77,728.24 : x
  2. Step 2: Convert to fraction form
    135,104.14/186,431.58 = 77,728.24/x
  3. Step 3: Cross multiply
    135,104.14x = 186,431.58 × 77,728.24
  4. Step 4: Simplify right side
    135,104.14x = 14,490,998,593.82
  5. Step 5: Solve for x
    x = 14,490,998,593.82/135,104.14
  6. Step 6: Final answer
    x = 107,257.99

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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.