Home / 120,716.10-180,944.55-45,807.30

Finding the Fourth Proportional to 120,716.10, 180,944.55 and 45,807.30

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Solution

The fourth proportional to 120,716.10, 180,944.55 and 45,807.30 is: 68,661.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,716.10 : 180,944.55 = 45,807.30 : x
  2. Step 2: Convert to fraction form
    120,716.10/180,944.55 = 45,807.30/x
  3. Step 3: Cross multiply
    120,716.10x = 180,944.55 × 45,807.30
  4. Step 4: Simplify right side
    120,716.10x = 8,288,581,285.22
  5. Step 5: Solve for x
    x = 8,288,581,285.22/120,716.10
  6. Step 6: Final answer
    x = 68,661.77

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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.