Home / 120,039.03-180,008.73-45,120.51

Finding the Fourth Proportional to 120,039.03, 180,008.73 and 45,120.51

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Solution

The fourth proportional to 120,039.03, 180,008.73 and 45,120.51 is: 67,662.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,039.03 : 180,008.73 = 45,120.51 : x
  2. Step 2: Convert to fraction form
    120,039.03/180,008.73 = 45,120.51/x
  3. Step 3: Cross multiply
    120,039.03x = 180,008.73 × 45,120.51
  4. Step 4: Simplify right side
    120,039.03x = 8,122,085,702.05
  5. Step 5: Solve for x
    x = 8,122,085,702.05/120,039.03
  6. Step 6: Final answer
    x = 67,662.04

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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.