Home / 211,129.68-291,348.12-115,617.90

Finding the Fourth Proportional to 211,129.68, 291,348.12 and 115,617.90

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Solution

The fourth proportional to 211,129.68, 291,348.12 and 115,617.90 is: 159,546.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,129.68 : 291,348.12 = 115,617.90 : x
  2. Step 2: Convert to fraction form
    211,129.68/291,348.12 = 115,617.90/x
  3. Step 3: Cross multiply
    211,129.68x = 291,348.12 × 115,617.90
  4. Step 4: Simplify right side
    211,129.68x = 33,685,057,803.35
  5. Step 5: Solve for x
    x = 33,685,057,803.35/211,129.68
  6. Step 6: Final answer
    x = 159,546.77

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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.