Home / 117,643.20-176,234.40-70,756.80

Finding the Fourth Proportional to 117,643.20, 176,234.40 and 70,756.80

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Solution

The fourth proportional to 117,643.20, 176,234.40 and 70,756.80 is: 105,996.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,643.20 : 176,234.40 = 70,756.80 : x
  2. Step 2: Convert to fraction form
    117,643.20/176,234.40 = 70,756.80/x
  3. Step 3: Cross multiply
    117,643.20x = 176,234.40 × 70,756.80
  4. Step 4: Simplify right side
    117,643.20x = 12,469,782,193.92
  5. Step 5: Solve for x
    x = 12,469,782,193.92/117,643.20
  6. Step 6: Final answer
    x = 105,996.63

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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.