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Finding the Fourth Proportional to 181,491.53, 272,090.17 and 81,578.57

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Solution

The fourth proportional to 181,491.53, 272,090.17 and 81,578.57 is: 122,301.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,491.53 : 272,090.17 = 81,578.57 : x
  2. Step 2: Convert to fraction form
    181,491.53/272,090.17 = 81,578.57/x
  3. Step 3: Cross multiply
    181,491.53x = 272,090.17 × 81,578.57
  4. Step 4: Simplify right side
    181,491.53x = 22,196,725,415.26
  5. Step 5: Solve for x
    x = 22,196,725,415.26/181,491.53
  6. Step 6: Final answer
    x = 122,301.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.