Home / 98,286.28-135,488.08-77,028.64

Finding the Fourth Proportional to 98,286.28, 135,488.08 and 77,028.64

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Solution

The fourth proportional to 98,286.28, 135,488.08 and 77,028.64 is: 106,184.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,286.28 : 135,488.08 = 77,028.64 : x
  2. Step 2: Convert to fraction form
    98,286.28/135,488.08 = 77,028.64/x
  3. Step 3: Cross multiply
    98,286.28x = 135,488.08 × 77,028.64
  4. Step 4: Simplify right side
    98,286.28x = 10,436,462,538.61
  5. Step 5: Solve for x
    x = 10,436,462,538.61/98,286.28
  6. Step 6: Final answer
    x = 106,184.33

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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.