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Finding the Fourth Proportional to 116,796, 161,178.66 and 66,495

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Solution

The fourth proportional to 116,796, 161,178.66 and 66,495 is: 91,763.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,796 : 161,178.66 = 66,495 : x
  2. Step 2: Convert to fraction form
    116,796/161,178.66 = 66,495/x
  3. Step 3: Cross multiply
    116,796x = 161,178.66 × 66,495
  4. Step 4: Simplify right side
    116,796x = 10,717,574,996.70
  5. Step 5: Solve for x
    x = 10,717,574,996.70/116,796
  6. Step 6: Final answer
    x = 91,763.20

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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.