Home / 131,021.85-180,809.05-73,661.42

Finding the Fourth Proportional to 131,021.85, 180,809.05 and 73,661.42

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Solution

The fourth proportional to 131,021.85, 180,809.05 and 73,661.42 is: 101,652.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,021.85 : 180,809.05 = 73,661.42 : x
  2. Step 2: Convert to fraction form
    131,021.85/180,809.05 = 73,661.42/x
  3. Step 3: Cross multiply
    131,021.85x = 180,809.05 × 73,661.42
  4. Step 4: Simplify right side
    131,021.85x = 13,318,651,371.85
  5. Step 5: Solve for x
    x = 13,318,651,371.85/131,021.85
  6. Step 6: Final answer
    x = 101,652.14

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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.