Home / 121,135.29-167,165.04-67,420.34

Finding the Fourth Proportional to 121,135.29, 167,165.04 and 67,420.34

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Solution

The fourth proportional to 121,135.29, 167,165.04 and 67,420.34 is: 93,039.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,135.29 : 167,165.04 = 67,420.34 : x
  2. Step 2: Convert to fraction form
    121,135.29/167,165.04 = 67,420.34/x
  3. Step 3: Cross multiply
    121,135.29x = 167,165.04 × 67,420.34
  4. Step 4: Simplify right side
    121,135.29x = 11,270,322,997.09
  5. Step 5: Solve for x
    x = 11,270,322,997.09/121,135.29
  6. Step 6: Final answer
    x = 93,039.14

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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.