Home / 120,273.36-180,403.50-45,391.69

Finding the Fourth Proportional to 120,273.36, 180,403.50 and 45,391.69

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Solution

The fourth proportional to 120,273.36, 180,403.50 and 45,391.69 is: 68,085.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,273.36 : 180,403.50 = 45,391.69 : x
  2. Step 2: Convert to fraction form
    120,273.36/180,403.50 = 45,391.69/x
  3. Step 3: Cross multiply
    120,273.36x = 180,403.50 × 45,391.69
  4. Step 4: Simplify right side
    120,273.36x = 8,188,820,142.64
  5. Step 5: Solve for x
    x = 8,188,820,142.64/120,273.36
  6. Step 6: Final answer
    x = 68,085.07

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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.