Home / 120,356.87-180,537.34-45,512.46

Finding the Fourth Proportional to 120,356.87, 180,537.34 and 45,512.46

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Solution

The fourth proportional to 120,356.87, 180,537.34 and 45,512.46 is: 68,269.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,356.87 : 180,537.34 = 45,512.46 : x
  2. Step 2: Convert to fraction form
    120,356.87/180,537.34 = 45,512.46/x
  3. Step 3: Cross multiply
    120,356.87x = 180,537.34 × 45,512.46
  4. Step 4: Simplify right side
    120,356.87x = 8,216,698,351.48
  5. Step 5: Solve for x
    x = 8,216,698,351.48/120,356.87
  6. Step 6: Final answer
    x = 68,269.46

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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.