Home / 142,143.01-196,156.03-78,481.26

Finding the Fourth Proportional to 142,143.01, 196,156.03 and 78,481.26

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Solution

The fourth proportional to 142,143.01, 196,156.03 and 78,481.26 is: 108,303.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,143.01 : 196,156.03 = 78,481.26 : x
  2. Step 2: Convert to fraction form
    142,143.01/196,156.03 = 78,481.26/x
  3. Step 3: Cross multiply
    142,143.01x = 196,156.03 × 78,481.26
  4. Step 4: Simplify right side
    142,143.01x = 15,394,572,391.00
  5. Step 5: Solve for x
    x = 15,394,572,391.00/142,143.01
  6. Step 6: Final answer
    x = 108,303.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.