Home / 455,986.13-684,013.55-136,112.72

Finding the Fourth Proportional to 455,986.13, 684,013.55 and 136,112.72

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Solution

The fourth proportional to 455,986.13, 684,013.55 and 136,112.72 is: 204,179.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,986.13 : 684,013.55 = 136,112.72 : x
  2. Step 2: Convert to fraction form
    455,986.13/684,013.55 = 136,112.72/x
  3. Step 3: Cross multiply
    455,986.13x = 684,013.55 × 136,112.72
  4. Step 4: Simplify right side
    455,986.13x = 93,102,940,706.72
  5. Step 5: Solve for x
    x = 93,102,940,706.72/455,986.13
  6. Step 6: Final answer
    x = 204,179.33

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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.