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Finding the Fourth Proportional to 116,769.60, 161,114.40 and 66,484.80

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Solution

The fourth proportional to 116,769.60, 161,114.40 and 66,484.80 is: 91,733.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,769.60 : 161,114.40 = 66,484.80 : x
  2. Step 2: Convert to fraction form
    116,769.60/161,114.40 = 66,484.80/x
  3. Step 3: Cross multiply
    116,769.60x = 161,114.40 × 66,484.80
  4. Step 4: Simplify right side
    116,769.60x = 10,711,658,661.12
  5. Step 5: Solve for x
    x = 10,711,658,661.12/116,769.60
  6. Step 6: Final answer
    x = 91,733.28

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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.