Home / 120,518.88-180,671.36-45,586.56

Finding the Fourth Proportional to 120,518.88, 180,671.36 and 45,586.56

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Solution

The fourth proportional to 120,518.88, 180,671.36 and 45,586.56 is: 68,339.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,518.88 : 180,671.36 = 45,586.56 : x
  2. Step 2: Convert to fraction form
    120,518.88/180,671.36 = 45,586.56/x
  3. Step 3: Cross multiply
    120,518.88x = 180,671.36 × 45,586.56
  4. Step 4: Simplify right side
    120,518.88x = 8,236,185,792.92
  5. Step 5: Solve for x
    x = 8,236,185,792.92/120,518.88
  6. Step 6: Final answer
    x = 68,339.38

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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.