Home / 120,605.26-180,916.55-31,857.90

Finding the Fourth Proportional to 120,605.26, 180,916.55 and 31,857.90

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Solution

The fourth proportional to 120,605.26, 180,916.55 and 31,857.90 is: 47,789.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,605.26 : 180,916.55 = 31,857.90 : x
  2. Step 2: Convert to fraction form
    120,605.26/180,916.55 = 31,857.90/x
  3. Step 3: Cross multiply
    120,605.26x = 180,916.55 × 31,857.90
  4. Step 4: Simplify right side
    120,605.26x = 5,763,621,358.25
  5. Step 5: Solve for x
    x = 5,763,621,358.25/120,605.26
  6. Step 6: Final answer
    x = 47,789.14

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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.