Home / 76,778.48-115,168.44-75,145.52

Finding the Fourth Proportional to 76,778.48, 115,168.44 and 75,145.52

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Solution

The fourth proportional to 76,778.48, 115,168.44 and 75,145.52 is: 112,718.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,778.48 : 115,168.44 = 75,145.52 : x
  2. Step 2: Convert to fraction form
    76,778.48/115,168.44 = 75,145.52/x
  3. Step 3: Cross multiply
    76,778.48x = 115,168.44 × 75,145.52
  4. Step 4: Simplify right side
    76,778.48x = 8,654,392,311.39
  5. Step 5: Solve for x
    x = 8,654,392,311.39/76,778.48
  6. Step 6: Final answer
    x = 112,718.98

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1.5x scale

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.