Home / 136,244.40-188,021.61-85,240.77

Finding the Fourth Proportional to 136,244.40, 188,021.61 and 85,240.77

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Solution

The fourth proportional to 136,244.40, 188,021.61 and 85,240.77 is: 117,634.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,244.40 : 188,021.61 = 85,240.77 : x
  2. Step 2: Convert to fraction form
    136,244.40/188,021.61 = 85,240.77/x
  3. Step 3: Cross multiply
    136,244.40x = 188,021.61 × 85,240.77
  4. Step 4: Simplify right side
    136,244.40x = 16,027,106,813.04
  5. Step 5: Solve for x
    x = 16,027,106,813.04/136,244.40
  6. Step 6: Final answer
    x = 117,634.98

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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.