Home / 129,613.88-178,858.05-71,468.03

Finding the Fourth Proportional to 129,613.88, 178,858.05 and 71,468.03

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Solution

The fourth proportional to 129,613.88, 178,858.05 and 71,468.03 is: 98,620.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,613.88 : 178,858.05 = 71,468.03 : x
  2. Step 2: Convert to fraction form
    129,613.88/178,858.05 = 71,468.03/x
  3. Step 3: Cross multiply
    129,613.88x = 178,858.05 × 71,468.03
  4. Step 4: Simplify right side
    129,613.88x = 12,782,632,483.14
  5. Step 5: Solve for x
    x = 12,782,632,483.14/129,613.88
  6. Step 6: Final answer
    x = 98,620.86

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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.