Home / 142,271.54-196,338.68-78,613.44

Finding the Fourth Proportional to 142,271.54, 196,338.68 and 78,613.44

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Solution

The fourth proportional to 142,271.54, 196,338.68 and 78,613.44 is: 108,488.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,271.54 : 196,338.68 = 78,613.44 : x
  2. Step 2: Convert to fraction form
    142,271.54/196,338.68 = 78,613.44/x
  3. Step 3: Cross multiply
    142,271.54x = 196,338.68 × 78,613.44
  4. Step 4: Simplify right side
    142,271.54x = 15,434,858,647.52
  5. Step 5: Solve for x
    x = 15,434,858,647.52/142,271.54
  6. Step 6: Final answer
    x = 108,488.73

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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.