Home / 455,122.51-682,459.12-139,503.31

Finding the Fourth Proportional to 455,122.51, 682,459.12 and 139,503.31

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Solution

The fourth proportional to 455,122.51, 682,459.12 and 139,503.31 is: 209,186.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,122.51 : 682,459.12 = 139,503.31 : x
  2. Step 2: Convert to fraction form
    455,122.51/682,459.12 = 139,503.31/x
  3. Step 3: Cross multiply
    455,122.51x = 682,459.12 × 139,503.31
  4. Step 4: Simplify right side
    455,122.51x = 95,205,306,179.69
  5. Step 5: Solve for x
    x = 95,205,306,179.69/455,122.51
  6. Step 6: Final answer
    x = 209,186.11

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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.