Home / 117,072.55-161,564.75-66,087.10

Finding the Fourth Proportional to 117,072.55, 161,564.75 and 66,087.10

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Solution

The fourth proportional to 117,072.55, 161,564.75 and 66,087.10 is: 91,202.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,072.55 : 161,564.75 = 66,087.10 : x
  2. Step 2: Convert to fraction form
    117,072.55/161,564.75 = 66,087.10/x
  3. Step 3: Cross multiply
    117,072.55x = 161,564.75 × 66,087.10
  4. Step 4: Simplify right side
    117,072.55x = 10,677,345,909.07
  5. Step 5: Solve for x
    x = 10,677,345,909.07/117,072.55
  6. Step 6: Final answer
    x = 91,202.81

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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.