Home / 211,154.56-291,395.82-115,665.28

Finding the Fourth Proportional to 211,154.56, 291,395.82 and 115,665.28

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Solution

The fourth proportional to 211,154.56, 291,395.82 and 115,665.28 is: 159,619.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,154.56 : 291,395.82 = 115,665.28 : x
  2. Step 2: Convert to fraction form
    211,154.56/291,395.82 = 115,665.28/x
  3. Step 3: Cross multiply
    211,154.56x = 291,395.82 × 115,665.28
  4. Step 4: Simplify right side
    211,154.56x = 33,704,379,111.13
  5. Step 5: Solve for x
    x = 33,704,379,111.13/211,154.56
  6. Step 6: Final answer
    x = 159,619.47

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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.