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Finding the Fourth Proportional to 117,030, 161,505.56 and 66,055.14

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Solution

The fourth proportional to 117,030, 161,505.56 and 66,055.14 is: 91,158.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,030 : 161,505.56 = 66,055.14 : x
  2. Step 2: Convert to fraction form
    117,030/161,505.56 = 66,055.14/x
  3. Step 3: Cross multiply
    117,030x = 161,505.56 × 66,055.14
  4. Step 4: Simplify right side
    117,030x = 10,668,272,046.30
  5. Step 5: Solve for x
    x = 10,668,272,046.30/117,030
  6. Step 6: Final answer
    x = 91,158.44

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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.