Home / 211,109.64-291,324.78-115,613.88

Finding the Fourth Proportional to 211,109.64, 291,324.78 and 115,613.88

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Solution

The fourth proportional to 211,109.64, 291,324.78 and 115,613.88 is: 159,543.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,109.64 : 291,324.78 = 115,613.88 : x
  2. Step 2: Convert to fraction form
    211,109.64/291,324.78 = 115,613.88/x
  3. Step 3: Cross multiply
    211,109.64x = 291,324.78 × 115,613.88
  4. Step 4: Simplify right side
    211,109.64x = 33,681,188,155.95
  5. Step 5: Solve for x
    x = 33,681,188,155.95/211,109.64
  6. Step 6: Final answer
    x = 159,543.58

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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.