Home / 77,256.20-115,884.30-68,799.80

Finding the Fourth Proportional to 77,256.20, 115,884.30 and 68,799.80

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Solution

The fourth proportional to 77,256.20, 115,884.30 and 68,799.80 is: 103,199.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,256.20 : 115,884.30 = 68,799.80 : x
  2. Step 2: Convert to fraction form
    77,256.20/115,884.30 = 68,799.80/x
  3. Step 3: Cross multiply
    77,256.20x = 115,884.30 × 68,799.80
  4. Step 4: Simplify right side
    77,256.20x = 7,972,816,663.14
  5. Step 5: Solve for x
    x = 7,972,816,663.14/77,256.20
  6. Step 6: Final answer
    x = 103,199.70

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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.