Home / 99,286.39-137,018.28-56,858.59

Finding the Fourth Proportional to 99,286.39, 137,018.28 and 56,858.59

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Solution

The fourth proportional to 99,286.39, 137,018.28 and 56,858.59 is: 78,466.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,286.39 : 137,018.28 = 56,858.59 : x
  2. Step 2: Convert to fraction form
    99,286.39/137,018.28 = 56,858.59/x
  3. Step 3: Cross multiply
    99,286.39x = 137,018.28 × 56,858.59
  4. Step 4: Simplify right side
    99,286.39x = 7,790,666,205.03
  5. Step 5: Solve for x
    x = 7,790,666,205.03/99,286.39
  6. Step 6: Final answer
    x = 78,466.61

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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.