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Finding the Fourth Proportional to 165,444.67, 248,210.74 and 86,537.71

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Solution

The fourth proportional to 165,444.67, 248,210.74 and 86,537.71 is: 129,829.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,444.67 : 248,210.74 = 86,537.71 : x
  2. Step 2: Convert to fraction form
    165,444.67/248,210.74 = 86,537.71/x
  3. Step 3: Cross multiply
    165,444.67x = 248,210.74 × 86,537.71
  4. Step 4: Simplify right side
    165,444.67x = 21,479,589,037.01
  5. Step 5: Solve for x
    x = 21,479,589,037.01/165,444.67
  6. Step 6: Final answer
    x = 129,829.44

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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.