Home / 120,379.20-180,597.60-57,998.40

Finding the Fourth Proportional to 120,379.20, 180,597.60 and 57,998.40

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Solution

The fourth proportional to 120,379.20, 180,597.60 and 57,998.40 is: 87,011.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,379.20 : 180,597.60 = 57,998.40 : x
  2. Step 2: Convert to fraction form
    120,379.20/180,597.60 = 57,998.40/x
  3. Step 3: Cross multiply
    120,379.20x = 180,597.60 × 57,998.40
  4. Step 4: Simplify right side
    120,379.20x = 10,474,371,843.84
  5. Step 5: Solve for x
    x = 10,474,371,843.84/120,379.20
  6. Step 6: Final answer
    x = 87,011.48

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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.