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Finding the Fourth Proportional to 121,748.03, 168,009.05 and 68,033.49

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Solution

The fourth proportional to 121,748.03, 168,009.05 and 68,033.49 is: 93,884.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,748.03 : 168,009.05 = 68,033.49 : x
  2. Step 2: Convert to fraction form
    121,748.03/168,009.05 = 68,033.49/x
  3. Step 3: Cross multiply
    121,748.03x = 168,009.05 × 68,033.49
  4. Step 4: Simplify right side
    121,748.03x = 11,430,242,023.08
  5. Step 5: Solve for x
    x = 11,430,242,023.08/121,748.03
  6. Step 6: Final answer
    x = 93,884.41

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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.