Home / 120,026.92-180,040.44-31,280.20

Finding the Fourth Proportional to 120,026.92, 180,040.44 and 31,280.20

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Solution

The fourth proportional to 120,026.92, 180,040.44 and 31,280.20 is: 46,920.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,026.92 : 180,040.44 = 31,280.20 : x
  2. Step 2: Convert to fraction form
    120,026.92/180,040.44 = 31,280.20/x
  3. Step 3: Cross multiply
    120,026.92x = 180,040.44 × 31,280.20
  4. Step 4: Simplify right side
    120,026.92x = 5,631,700,971.29
  5. Step 5: Solve for x
    x = 5,631,700,971.29/120,026.92
  6. Step 6: Final answer
    x = 46,920.32

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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.