Home / 120,026.18-180,039.33-31,279.46

Finding the Fourth Proportional to 120,026.18, 180,039.33 and 31,279.46

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Solution

The fourth proportional to 120,026.18, 180,039.33 and 31,279.46 is: 46,919.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,026.18 : 180,039.33 = 31,279.46 : x
  2. Step 2: Convert to fraction form
    120,026.18/180,039.33 = 31,279.46/x
  3. Step 3: Cross multiply
    120,026.18x = 180,039.33 × 31,279.46
  4. Step 4: Simplify right side
    120,026.18x = 5,631,531,964.57
  5. Step 5: Solve for x
    x = 5,631,531,964.57/120,026.18
  6. Step 6: Final answer
    x = 46,919.20

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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.