Home / 120,723.80-180,869.70-58,256.60

Finding the Fourth Proportional to 120,723.80, 180,869.70 and 58,256.60

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Solution

The fourth proportional to 120,723.80, 180,869.70 and 58,256.60 is: 87,280.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,723.80 : 180,869.70 = 58,256.60 : x
  2. Step 2: Convert to fraction form
    120,723.80/180,869.70 = 58,256.60/x
  3. Step 3: Cross multiply
    120,723.80x = 180,869.70 × 58,256.60
  4. Step 4: Simplify right side
    120,723.80x = 10,536,853,765.02
  5. Step 5: Solve for x
    x = 10,536,853,765.02/120,723.80
  6. Step 6: Final answer
    x = 87,280.67

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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.