Home / 120,362.30-180,545.50-45,517.69

Finding the Fourth Proportional to 120,362.30, 180,545.50 and 45,517.69

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Solution

The fourth proportional to 120,362.30, 180,545.50 and 45,517.69 is: 68,277.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,362.30 : 180,545.50 = 45,517.69 : x
  2. Step 2: Convert to fraction form
    120,362.30/180,545.50 = 45,517.69/x
  3. Step 3: Cross multiply
    120,362.30x = 180,545.50 × 45,517.69
  4. Step 4: Simplify right side
    120,362.30x = 8,218,014,382.47
  5. Step 5: Solve for x
    x = 8,218,014,382.47/120,362.30
  6. Step 6: Final answer
    x = 68,277.31

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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.