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Finding the Fourth Proportional to 165,671.40, 248,636.70 and 76,935.90

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Solution

The fourth proportional to 165,671.40, 248,636.70 and 76,935.90 is: 115,464.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,671.40 : 248,636.70 = 76,935.90 : x
  2. Step 2: Convert to fraction form
    165,671.40/248,636.70 = 76,935.90/x
  3. Step 3: Cross multiply
    165,671.40x = 248,636.70 × 76,935.90
  4. Step 4: Simplify right side
    165,671.40x = 19,129,088,287.53
  5. Step 5: Solve for x
    x = 19,129,088,287.53/165,671.40
  6. Step 6: Final answer
    x = 115,464.03

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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.