Home / 100,948.82-139,309.38-58,531.96

Finding the Fourth Proportional to 100,948.82, 139,309.38 and 58,531.96

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Solution

The fourth proportional to 100,948.82, 139,309.38 and 58,531.96 is: 80,774.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,948.82 : 139,309.38 = 58,531.96 : x
  2. Step 2: Convert to fraction form
    100,948.82/139,309.38 = 58,531.96/x
  3. Step 3: Cross multiply
    100,948.82x = 139,309.38 × 58,531.96
  4. Step 4: Simplify right side
    100,948.82x = 8,154,051,057.78
  5. Step 5: Solve for x
    x = 8,154,051,057.78/100,948.82
  6. Step 6: Final answer
    x = 80,774.11

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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.