Home / 120,811.37-181,217.18-45,913.91

Finding the Fourth Proportional to 120,811.37, 181,217.18 and 45,913.91

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Solution

The fourth proportional to 120,811.37, 181,217.18 and 45,913.91 is: 68,870.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,811.37 : 181,217.18 = 45,913.91 : x
  2. Step 2: Convert to fraction form
    120,811.37/181,217.18 = 45,913.91/x
  3. Step 3: Cross multiply
    120,811.37x = 181,217.18 × 45,913.91
  4. Step 4: Simplify right side
    120,811.37x = 8,320,388,501.67
  5. Step 5: Solve for x
    x = 8,320,388,501.67/120,811.37
  6. Step 6: Final answer
    x = 68,870.91

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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.