Home / 208,986.23-288,446.93-137,372.91

Finding the Fourth Proportional to 208,986.23, 288,446.93 and 137,372.91

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Solution

The fourth proportional to 208,986.23, 288,446.93 and 137,372.91 is: 189,604.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,986.23 : 288,446.93 = 137,372.91 : x
  2. Step 2: Convert to fraction form
    208,986.23/288,446.93 = 137,372.91/x
  3. Step 3: Cross multiply
    208,986.23x = 288,446.93 × 137,372.91
  4. Step 4: Simplify right side
    208,986.23x = 39,624,793,467.80
  5. Step 5: Solve for x
    x = 39,624,793,467.80/208,986.23
  6. Step 6: Final answer
    x = 189,604.81

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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.