Home / 103,999.76-143,519.70-58,687.37

Finding the Fourth Proportional to 103,999.76, 143,519.70 and 58,687.37

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Solution

The fourth proportional to 103,999.76, 143,519.70 and 58,687.37 is: 80,988.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,999.76 : 143,519.70 = 58,687.37 : x
  2. Step 2: Convert to fraction form
    103,999.76/143,519.70 = 58,687.37/x
  3. Step 3: Cross multiply
    103,999.76x = 143,519.70 × 58,687.37
  4. Step 4: Simplify right side
    103,999.76x = 8,422,793,736.19
  5. Step 5: Solve for x
    x = 8,422,793,736.19/103,999.76
  6. Step 6: Final answer
    x = 80,988.59

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1.5x scale

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.