Home / 117,158.25-161,681.39-71,861.26

Finding the Fourth Proportional to 117,158.25, 161,681.39 and 71,861.26

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Solution

The fourth proportional to 117,158.25, 161,681.39 and 71,861.26 is: 99,170.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,158.25 : 161,681.39 = 71,861.26 : x
  2. Step 2: Convert to fraction form
    117,158.25/161,681.39 = 71,861.26/x
  3. Step 3: Cross multiply
    117,158.25x = 161,681.39 × 71,861.26
  4. Step 4: Simplify right side
    117,158.25x = 11,618,628,403.95
  5. Step 5: Solve for x
    x = 11,618,628,403.95/117,158.25
  6. Step 6: Final answer
    x = 99,170.38

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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.