Home / 142,991.09-197,351.33-79,349.39

Finding the Fourth Proportional to 142,991.09, 197,351.33 and 79,349.39

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Solution

The fourth proportional to 142,991.09, 197,351.33 and 79,349.39 is: 109,515.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,991.09 : 197,351.33 = 79,349.39 : x
  2. Step 2: Convert to fraction form
    142,991.09/197,351.33 = 79,349.39/x
  3. Step 3: Cross multiply
    142,991.09x = 197,351.33 × 79,349.39
  4. Step 4: Simplify right side
    142,991.09x = 15,659,706,267.69
  5. Step 5: Solve for x
    x = 15,659,706,267.69/142,991.09
  6. Step 6: Final answer
    x = 109,515.26

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1.5x scale

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.