Home / 269,918.72-405,124.88-136,890.72

Finding the Fourth Proportional to 269,918.72, 405,124.88 and 136,890.72

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Solution

The fourth proportional to 269,918.72, 405,124.88 and 136,890.72 is: 205,461.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,918.72 : 405,124.88 = 136,890.72 : x
  2. Step 2: Convert to fraction form
    269,918.72/405,124.88 = 136,890.72/x
  3. Step 3: Cross multiply
    269,918.72x = 405,124.88 × 136,890.72
  4. Step 4: Simplify right side
    269,918.72x = 55,457,836,513.11
  5. Step 5: Solve for x
    x = 55,457,836,513.11/269,918.72
  6. Step 6: Final answer
    x = 205,461.25

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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.