Home / 103,649.13-143,072.73-61,207.83

Finding the Fourth Proportional to 103,649.13, 143,072.73 and 61,207.83

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Solution

The fourth proportional to 103,649.13, 143,072.73 and 61,207.83 is: 84,488.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,649.13 : 143,072.73 = 61,207.83 : x
  2. Step 2: Convert to fraction form
    103,649.13/143,072.73 = 61,207.83/x
  3. Step 3: Cross multiply
    103,649.13x = 143,072.73 × 61,207.83
  4. Step 4: Simplify right side
    103,649.13x = 8,757,171,335.48
  5. Step 5: Solve for x
    x = 8,757,171,335.48/103,649.13
  6. Step 6: Final answer
    x = 84,488.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.