Home / 212,785.60-293,635.20-136,196.80

Finding the Fourth Proportional to 212,785.60, 293,635.20 and 136,196.80

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Solution

The fourth proportional to 212,785.60, 293,635.20 and 136,196.80 is: 187,945.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,785.60 : 293,635.20 = 136,196.80 : x
  2. Step 2: Convert to fraction form
    212,785.60/293,635.20 = 136,196.80/x
  3. Step 3: Cross multiply
    212,785.60x = 293,635.20 × 136,196.80
  4. Step 4: Simplify right side
    212,785.60x = 39,992,174,607.36
  5. Step 5: Solve for x
    x = 39,992,174,607.36/212,785.60
  6. Step 6: Final answer
    x = 187,945.87

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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.