Home / 90,764.12-136,160.76-38,188.64

Finding the Fourth Proportional to 90,764.12, 136,160.76 and 38,188.64

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Solution

The fourth proportional to 90,764.12, 136,160.76 and 38,188.64 is: 57,289.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,764.12 : 136,160.76 = 38,188.64 : x
  2. Step 2: Convert to fraction form
    90,764.12/136,160.76 = 38,188.64/x
  3. Step 3: Cross multiply
    90,764.12x = 136,160.76 × 38,188.64
  4. Step 4: Simplify right side
    90,764.12x = 5,199,794,245.77
  5. Step 5: Solve for x
    x = 5,199,794,245.77/90,764.12
  6. Step 6: Final answer
    x = 57,289.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.