Home / 121,835.34-168,132.31-68,120.19

Finding the Fourth Proportional to 121,835.34, 168,132.31 and 68,120.19

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Solution

The fourth proportional to 121,835.34, 168,132.31 and 68,120.19 is: 94,005.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,835.34 : 168,132.31 = 68,120.19 : x
  2. Step 2: Convert to fraction form
    121,835.34/168,132.31 = 68,120.19/x
  3. Step 3: Cross multiply
    121,835.34x = 168,132.31 × 68,120.19
  4. Step 4: Simplify right side
    121,835.34x = 11,453,204,732.04
  5. Step 5: Solve for x
    x = 11,453,204,732.04/121,835.34
  6. Step 6: Final answer
    x = 94,005.60

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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.