Home / 143,364.90-214,974.45-84,218.70

Finding the Fourth Proportional to 143,364.90, 214,974.45 and 84,218.70

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Solution

The fourth proportional to 143,364.90, 214,974.45 and 84,218.70 is: 126,285.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,364.90 : 214,974.45 = 84,218.70 : x
  2. Step 2: Convert to fraction form
    143,364.90/214,974.45 = 84,218.70/x
  3. Step 3: Cross multiply
    143,364.90x = 214,974.45 × 84,218.70
  4. Step 4: Simplify right side
    143,364.90x = 18,104,868,712.22
  5. Step 5: Solve for x
    x = 18,104,868,712.22/143,364.90
  6. Step 6: Final answer
    x = 126,285.23

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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.