Home / 144,198.80-216,172.88-69,281.36

Finding the Fourth Proportional to 144,198.80, 216,172.88 and 69,281.36

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Solution

The fourth proportional to 144,198.80, 216,172.88 and 69,281.36 is: 103,861.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,198.80 : 216,172.88 = 69,281.36 : x
  2. Step 2: Convert to fraction form
    144,198.80/216,172.88 = 69,281.36/x
  3. Step 3: Cross multiply
    144,198.80x = 216,172.88 × 69,281.36
  4. Step 4: Simplify right side
    144,198.80x = 14,976,751,121.52
  5. Step 5: Solve for x
    x = 14,976,751,121.52/144,198.80
  6. Step 6: Final answer
    x = 103,861.83

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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.