Home / 100,823.58-139,131.75-55,500.62

Finding the Fourth Proportional to 100,823.58, 139,131.75 and 55,500.62

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Solution

The fourth proportional to 100,823.58, 139,131.75 and 55,500.62 is: 76,588.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,823.58 : 139,131.75 = 55,500.62 : x
  2. Step 2: Convert to fraction form
    100,823.58/139,131.75 = 55,500.62/x
  3. Step 3: Cross multiply
    100,823.58x = 139,131.75 × 55,500.62
  4. Step 4: Simplify right side
    100,823.58x = 7,721,897,691.03
  5. Step 5: Solve for x
    x = 7,721,897,691.03/100,823.58
  6. Step 6: Final answer
    x = 76,588.21

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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.