Home / 77,250.20-115,875.30-68,793.80

Finding the Fourth Proportional to 77,250.20, 115,875.30 and 68,793.80

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Solution

The fourth proportional to 77,250.20, 115,875.30 and 68,793.80 is: 103,190.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,250.20 : 115,875.30 = 68,793.80 : x
  2. Step 2: Convert to fraction form
    77,250.20/115,875.30 = 68,793.80/x
  3. Step 3: Cross multiply
    77,250.20x = 115,875.30 × 68,793.80
  4. Step 4: Simplify right side
    77,250.20x = 7,971,502,213.14
  5. Step 5: Solve for x
    x = 7,971,502,213.14/77,250.20
  6. Step 6: Final answer
    x = 103,190.70

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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.