Home / 120,228.30-180,327.06-31,481.46

Finding the Fourth Proportional to 120,228.30, 180,327.06 and 31,481.46

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Solution

The fourth proportional to 120,228.30, 180,327.06 and 31,481.46 is: 47,218.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,228.30 : 180,327.06 = 31,481.46 : x
  2. Step 2: Convert to fraction form
    120,228.30/180,327.06 = 31,481.46/x
  3. Step 3: Cross multiply
    120,228.30x = 180,327.06 × 31,481.46
  4. Step 4: Simplify right side
    120,228.30x = 5,676,959,126.31
  5. Step 5: Solve for x
    x = 5,676,959,126.31/120,228.30
  6. Step 6: Final answer
    x = 47,218.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.