Home / 455,983.11-684,009.05-136,109.72

Finding the Fourth Proportional to 455,983.11, 684,009.05 and 136,109.72

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Solution

The fourth proportional to 455,983.11, 684,009.05 and 136,109.72 is: 204,174.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,983.11 : 684,009.05 = 136,109.72 : x
  2. Step 2: Convert to fraction form
    455,983.11/684,009.05 = 136,109.72/x
  3. Step 3: Cross multiply
    455,983.11x = 684,009.05 × 136,109.72
  4. Step 4: Simplify right side
    455,983.11x = 93,100,276,172.37
  5. Step 5: Solve for x
    x = 93,100,276,172.37/455,983.11
  6. Step 6: Final answer
    x = 204,174.83

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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.