Home / 143,386.20-215,103.60-43,545.60

Finding the Fourth Proportional to 143,386.20, 215,103.60 and 43,545.60

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Solution

The fourth proportional to 143,386.20, 215,103.60 and 43,545.60 is: 65,325.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,386.20 : 215,103.60 = 43,545.60 : x
  2. Step 2: Convert to fraction form
    143,386.20/215,103.60 = 43,545.60/x
  3. Step 3: Cross multiply
    143,386.20x = 215,103.60 × 43,545.60
  4. Step 4: Simplify right side
    143,386.20x = 9,366,815,324.16
  5. Step 5: Solve for x
    x = 9,366,815,324.16/143,386.20
  6. Step 6: Final answer
    x = 65,325.78

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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.