Home / 120,358.01-180,545.21-31,611.36

Finding the Fourth Proportional to 120,358.01, 180,545.21 and 31,611.36

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Solution

The fourth proportional to 120,358.01, 180,545.21 and 31,611.36 is: 47,419.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,358.01 : 180,545.21 = 31,611.36 : x
  2. Step 2: Convert to fraction form
    120,358.01/180,545.21 = 31,611.36/x
  3. Step 3: Cross multiply
    120,358.01x = 180,545.21 × 31,611.36
  4. Step 4: Simplify right side
    120,358.01x = 5,707,279,629.59
  5. Step 5: Solve for x
    x = 5,707,279,629.59/120,358.01
  6. Step 6: Final answer
    x = 47,419.19

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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.