Home / 211,105.76-291,326.88-115,613.12

Finding the Fourth Proportional to 211,105.76, 291,326.88 and 115,613.12

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Solution

The fourth proportional to 211,105.76, 291,326.88 and 115,613.12 is: 159,546.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,105.76 : 291,326.88 = 115,613.12 : x
  2. Step 2: Convert to fraction form
    211,105.76/291,326.88 = 115,613.12/x
  3. Step 3: Cross multiply
    211,105.76x = 291,326.88 × 115,613.12
  4. Step 4: Simplify right side
    211,105.76x = 33,681,209,536.67
  5. Step 5: Solve for x
    x = 33,681,209,536.67/211,105.76
  6. Step 6: Final answer
    x = 159,546.62

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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.