Home / 120,199.73-180,309.86-31,453.16

Finding the Fourth Proportional to 120,199.73, 180,309.86 and 31,453.16

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Solution

The fourth proportional to 120,199.73, 180,309.86 and 31,453.16 is: 47,182.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,199.73 : 180,309.86 = 31,453.16 : x
  2. Step 2: Convert to fraction form
    120,199.73/180,309.86 = 31,453.16/x
  3. Step 3: Cross multiply
    120,199.73x = 180,309.86 × 31,453.16
  4. Step 4: Simplify right side
    120,199.73x = 5,671,314,876.16
  5. Step 5: Solve for x
    x = 5,671,314,876.16/120,199.73
  6. Step 6: Final answer
    x = 47,182.43

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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.