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Finding the Fourth Proportional to 121,457.69, 167,484.43 and 104,519.37

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Solution

The fourth proportional to 121,457.69, 167,484.43 and 104,519.37 is: 144,127.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,457.69 : 167,484.43 = 104,519.37 : x
  2. Step 2: Convert to fraction form
    121,457.69/167,484.43 = 104,519.37/x
  3. Step 3: Cross multiply
    121,457.69x = 167,484.43 × 104,519.37
  4. Step 4: Simplify right side
    121,457.69x = 17,505,366,847.11
  5. Step 5: Solve for x
    x = 17,505,366,847.11/121,457.69
  6. Step 6: Final answer
    x = 144,127.29

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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.