Home / 136,245.90-188,023.68-85,242.27

Finding the Fourth Proportional to 136,245.90, 188,023.68 and 85,242.27

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Solution

The fourth proportional to 136,245.90, 188,023.68 and 85,242.27 is: 117,637.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,245.90 : 188,023.68 = 85,242.27 : x
  2. Step 2: Convert to fraction form
    136,245.90/188,023.68 = 85,242.27/x
  3. Step 3: Cross multiply
    136,245.90x = 188,023.68 × 85,242.27
  4. Step 4: Simplify right side
    136,245.90x = 16,027,565,296.95
  5. Step 5: Solve for x
    x = 16,027,565,296.95/136,245.90
  6. Step 6: Final answer
    x = 117,637.05

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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.