Home / 142,218.47-196,251.50-78,551.25

Finding the Fourth Proportional to 142,218.47, 196,251.50 and 78,551.25

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Solution

The fourth proportional to 142,218.47, 196,251.50 and 78,551.25 is: 108,395.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,218.47 : 196,251.50 = 78,551.25 : x
  2. Step 2: Convert to fraction form
    142,218.47/196,251.50 = 78,551.25/x
  3. Step 3: Cross multiply
    142,218.47x = 196,251.50 × 78,551.25
  4. Step 4: Simplify right side
    142,218.47x = 15,415,800,246.62
  5. Step 5: Solve for x
    x = 15,415,800,246.62/142,218.47
  6. Step 6: Final answer
    x = 108,395.21

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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.