Home / 100,955.48-139,317.91-55,633.82

Finding the Fourth Proportional to 100,955.48, 139,317.91 and 55,633.82

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Solution

The fourth proportional to 100,955.48, 139,317.91 and 55,633.82 is: 76,774.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,955.48 : 139,317.91 = 55,633.82 : x
  2. Step 2: Convert to fraction form
    100,955.48/139,317.91 = 55,633.82/x
  3. Step 3: Cross multiply
    100,955.48x = 139,317.91 × 55,633.82
  4. Step 4: Simplify right side
    100,955.48x = 7,750,786,692.04
  5. Step 5: Solve for x
    x = 7,750,786,692.04/100,955.48
  6. Step 6: Final answer
    x = 76,774.31

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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.