Home / 113,389.39-156,467.78-66,814.87

Finding the Fourth Proportional to 113,389.39, 156,467.78 and 66,814.87

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Solution

The fourth proportional to 113,389.39, 156,467.78 and 66,814.87 is: 92,198.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,389.39 : 156,467.78 = 66,814.87 : x
  2. Step 2: Convert to fraction form
    113,389.39/156,467.78 = 66,814.87/x
  3. Step 3: Cross multiply
    113,389.39x = 156,467.78 × 66,814.87
  4. Step 4: Simplify right side
    113,389.39x = 10,454,374,379.89
  5. Step 5: Solve for x
    x = 10,454,374,379.89/113,389.39
  6. Step 6: Final answer
    x = 92,198.88

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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.