Home / 137,814.80-190,172.76-77,380.70

Finding the Fourth Proportional to 137,814.80, 190,172.76 and 77,380.70

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Solution

The fourth proportional to 137,814.80, 190,172.76 and 77,380.70 is: 106,778.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,814.80 : 190,172.76 = 77,380.70 : x
  2. Step 2: Convert to fraction form
    137,814.80/190,172.76 = 77,380.70/x
  3. Step 3: Cross multiply
    137,814.80x = 190,172.76 × 77,380.70
  4. Step 4: Simplify right side
    137,814.80x = 14,715,701,289.73
  5. Step 5: Solve for x
    x = 14,715,701,289.73/137,814.80
  6. Step 6: Final answer
    x = 106,778.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.