Home / 121,735.89-168,102.41-76,492.26

Finding the Fourth Proportional to 121,735.89, 168,102.41 and 76,492.26

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Solution

The fourth proportional to 121,735.89, 168,102.41 and 76,492.26 is: 105,626.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,735.89 : 168,102.41 = 76,492.26 : x
  2. Step 2: Convert to fraction form
    121,735.89/168,102.41 = 76,492.26/x
  3. Step 3: Cross multiply
    121,735.89x = 168,102.41 × 76,492.26
  4. Step 4: Simplify right side
    121,735.89x = 12,858,532,869.89
  5. Step 5: Solve for x
    x = 12,858,532,869.89/121,735.89
  6. Step 6: Final answer
    x = 105,626.47

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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.