Home / 100,922.72-139,284.30-55,605.35

Finding the Fourth Proportional to 100,922.72, 139,284.30 and 55,605.35

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Solution

The fourth proportional to 100,922.72, 139,284.30 and 55,605.35 is: 76,741.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,922.72 : 139,284.30 = 55,605.35 : x
  2. Step 2: Convert to fraction form
    100,922.72/139,284.30 = 55,605.35/x
  3. Step 3: Cross multiply
    100,922.72x = 139,284.30 × 55,605.35
  4. Step 4: Simplify right side
    100,922.72x = 7,744,952,251.01
  5. Step 5: Solve for x
    x = 7,744,952,251.01/100,922.72
  6. Step 6: Final answer
    x = 76,741.41

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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.