Home / 120,305.31-180,480.03-40,335.21

Finding the Fourth Proportional to 120,305.31, 180,480.03 and 40,335.21

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Solution

The fourth proportional to 120,305.31, 180,480.03 and 40,335.21 is: 60,510.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,305.31 : 180,480.03 = 40,335.21 : x
  2. Step 2: Convert to fraction form
    120,305.31/180,480.03 = 40,335.21/x
  3. Step 3: Cross multiply
    120,305.31x = 180,480.03 × 40,335.21
  4. Step 4: Simplify right side
    120,305.31x = 7,279,699,910.86
  5. Step 5: Solve for x
    x = 7,279,699,910.86/120,305.31
  6. Step 6: Final answer
    x = 60,510.21

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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.