Home / 103,988.13-143,505-58,665.96

Finding the Fourth Proportional to 103,988.13, 143,505 and 58,665.96

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Solution

The fourth proportional to 103,988.13, 143,505 and 58,665.96 is: 80,959.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,988.13 : 143,505 = 58,665.96 : x
  2. Step 2: Convert to fraction form
    103,988.13/143,505 = 58,665.96/x
  3. Step 3: Cross multiply
    103,988.13x = 143,505 × 58,665.96
  4. Step 4: Simplify right side
    103,988.13x = 8,418,858,589.80
  5. Step 5: Solve for x
    x = 8,418,858,589.80/103,988.13
  6. Step 6: Final answer
    x = 80,959.80

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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.