Home / 103,636.24-155,279.40-82,816

Finding the Fourth Proportional to 103,636.24, 155,279.40 and 82,816

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Solution

The fourth proportional to 103,636.24, 155,279.40 and 82,816 is: 124,084.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,636.24 : 155,279.40 = 82,816 : x
  2. Step 2: Convert to fraction form
    103,636.24/155,279.40 = 82,816/x
  3. Step 3: Cross multiply
    103,636.24x = 155,279.40 × 82,816
  4. Step 4: Simplify right side
    103,636.24x = 12,859,618,790.40
  5. Step 5: Solve for x
    x = 12,859,618,790.40/103,636.24
  6. Step 6: Final answer
    x = 124,084.19

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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.