Home / 142,452.05-196,588.97-78,790.30

Finding the Fourth Proportional to 142,452.05, 196,588.97 and 78,790.30

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Solution

The fourth proportional to 142,452.05, 196,588.97 and 78,790.30 is: 108,733.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,452.05 : 196,588.97 = 78,790.30 : x
  2. Step 2: Convert to fraction form
    142,452.05/196,588.97 = 78,790.30/x
  3. Step 3: Cross multiply
    142,452.05x = 196,588.97 × 78,790.30
  4. Step 4: Simplify right side
    142,452.05x = 15,489,303,922.99
  5. Step 5: Solve for x
    x = 15,489,303,922.99/142,452.05
  6. Step 6: Final answer
    x = 108,733.46

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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.