Home / 142,201.38-213,170.28-53,513.70

Finding the Fourth Proportional to 142,201.38, 213,170.28 and 53,513.70

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Solution

The fourth proportional to 142,201.38, 213,170.28 and 53,513.70 is: 80,220.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,201.38 : 213,170.28 = 53,513.70 : x
  2. Step 2: Convert to fraction form
    142,201.38/213,170.28 = 53,513.70/x
  3. Step 3: Cross multiply
    142,201.38x = 213,170.28 × 53,513.70
  4. Step 4: Simplify right side
    142,201.38x = 11,407,530,412.84
  5. Step 5: Solve for x
    x = 11,407,530,412.84/142,201.38
  6. Step 6: Final answer
    x = 80,220.95

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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.