Home / 211,122.64-291,334.08-115,613.92

Finding the Fourth Proportional to 211,122.64, 291,334.08 and 115,613.92

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Solution

The fourth proportional to 211,122.64, 291,334.08 and 115,613.92 is: 159,538.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,122.64 : 291,334.08 = 115,613.92 : x
  2. Step 2: Convert to fraction form
    211,122.64/291,334.08 = 115,613.92/x
  3. Step 3: Cross multiply
    211,122.64x = 291,334.08 × 115,613.92
  4. Step 4: Simplify right side
    211,122.64x = 33,682,275,018.39
  5. Step 5: Solve for x
    x = 33,682,275,018.39/211,122.64
  6. Step 6: Final answer
    x = 159,538.91

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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.