Home / 122,457.57-168,991.37-68,742.69

Finding the Fourth Proportional to 122,457.57, 168,991.37 and 68,742.69

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Solution

The fourth proportional to 122,457.57, 168,991.37 and 68,742.69 is: 94,864.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,457.57 : 168,991.37 = 68,742.69 : x
  2. Step 2: Convert to fraction form
    122,457.57/168,991.37 = 68,742.69/x
  3. Step 3: Cross multiply
    122,457.57x = 168,991.37 × 68,742.69
  4. Step 4: Simplify right side
    122,457.57x = 11,616,921,016.87
  5. Step 5: Solve for x
    x = 11,616,921,016.87/122,457.57
  6. Step 6: Final answer
    x = 94,864.87

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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.