Home / 120,205.11-180,258.45-53,599.68

Finding the Fourth Proportional to 120,205.11, 180,258.45 and 53,599.68

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Solution

The fourth proportional to 120,205.11, 180,258.45 and 53,599.68 is: 80,377.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,205.11 : 180,258.45 = 53,599.68 : x
  2. Step 2: Convert to fraction form
    120,205.11/180,258.45 = 53,599.68/x
  3. Step 3: Cross multiply
    120,205.11x = 180,258.45 × 53,599.68
  4. Step 4: Simplify right side
    120,205.11x = 9,661,795,237.30
  5. Step 5: Solve for x
    x = 9,661,795,237.30/120,205.11
  6. Step 6: Final answer
    x = 80,377.57

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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.