Home / 211,128.66-291,349.71-115,636.14

Finding the Fourth Proportional to 211,128.66, 291,349.71 and 115,636.14

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Solution

The fourth proportional to 211,128.66, 291,349.71 and 115,636.14 is: 159,573.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,128.66 : 291,349.71 = 115,636.14 : x
  2. Step 2: Convert to fraction form
    211,128.66/291,349.71 = 115,636.14/x
  3. Step 3: Cross multiply
    211,128.66x = 291,349.71 × 115,636.14
  4. Step 4: Simplify right side
    211,128.66x = 33,690,555,854.52
  5. Step 5: Solve for x
    x = 33,690,555,854.52/211,128.66
  6. Step 6: Final answer
    x = 159,573.58

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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.