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Finding the Fourth Proportional to 163,457.38, 225,564.91 and 91,840.42

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Solution

The fourth proportional to 163,457.38, 225,564.91 and 91,840.42 is: 126,736.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,457.38 : 225,564.91 = 91,840.42 : x
  2. Step 2: Convert to fraction form
    163,457.38/225,564.91 = 91,840.42/x
  3. Step 3: Cross multiply
    163,457.38x = 225,564.91 × 91,840.42
  4. Step 4: Simplify right side
    163,457.38x = 20,715,976,071.66
  5. Step 5: Solve for x
    x = 20,715,976,071.66/163,457.38
  6. Step 6: Final answer
    x = 126,736.25

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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.