Home / 142,958.20-197,199.78-89,149.80

Finding the Fourth Proportional to 142,958.20, 197,199.78 and 89,149.80

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Solution

The fourth proportional to 142,958.20, 197,199.78 and 89,149.80 is: 122,975.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,958.20 : 197,199.78 = 89,149.80 : x
  2. Step 2: Convert to fraction form
    142,958.20/197,199.78 = 89,149.80/x
  3. Step 3: Cross multiply
    142,958.20x = 197,199.78 × 89,149.80
  4. Step 4: Simplify right side
    142,958.20x = 17,580,320,947.04
  5. Step 5: Solve for x
    x = 17,580,320,947.04/142,958.20
  6. Step 6: Final answer
    x = 122,975.25

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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.