Home / 211,112.28-291,337.43-115,623

Finding the Fourth Proportional to 211,112.28, 291,337.43 and 115,623

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Solution

The fourth proportional to 211,112.28, 291,337.43 and 115,623 is: 159,561.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,112.28 : 291,337.43 = 115,623 : x
  2. Step 2: Convert to fraction form
    211,112.28/291,337.43 = 115,623/x
  3. Step 3: Cross multiply
    211,112.28x = 291,337.43 × 115,623
  4. Step 4: Simplify right side
    211,112.28x = 33,685,307,090.78
  5. Step 5: Solve for x
    x = 33,685,307,090.78/211,112.28
  6. Step 6: Final answer
    x = 159,561.10

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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.