Home / 211,147.52-291,383.64-115,657.65

Finding the Fourth Proportional to 211,147.52, 291,383.64 and 115,657.65

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Solution

The fourth proportional to 211,147.52, 291,383.64 and 115,657.65 is: 159,607.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,147.52 : 291,383.64 = 115,657.65 : x
  2. Step 2: Convert to fraction form
    211,147.52/291,383.64 = 115,657.65/x
  3. Step 3: Cross multiply
    211,147.52x = 291,383.64 × 115,657.65
  4. Step 4: Simplify right side
    211,147.52x = 33,700,747,050.85
  5. Step 5: Solve for x
    x = 33,700,747,050.85/211,147.52
  6. Step 6: Final answer
    x = 159,607.59

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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.