Home / 100,960.22-139,331.19-55,638.08

Finding the Fourth Proportional to 100,960.22, 139,331.19 and 55,638.08

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Solution

The fourth proportional to 100,960.22, 139,331.19 and 55,638.08 is: 76,783.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,960.22 : 139,331.19 = 55,638.08 : x
  2. Step 2: Convert to fraction form
    100,960.22/139,331.19 = 55,638.08/x
  3. Step 3: Cross multiply
    100,960.22x = 139,331.19 × 55,638.08
  4. Step 4: Simplify right side
    100,960.22x = 7,752,119,895.72
  5. Step 5: Solve for x
    x = 7,752,119,895.72/100,960.22
  6. Step 6: Final answer
    x = 76,783.90

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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.