Home / 121,876.27-168,197.85-68,166.28

Finding the Fourth Proportional to 121,876.27, 168,197.85 and 68,166.28

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Solution

The fourth proportional to 121,876.27, 168,197.85 and 68,166.28 is: 94,074.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,876.27 : 168,197.85 = 68,166.28 : x
  2. Step 2: Convert to fraction form
    121,876.27/168,197.85 = 68,166.28/x
  3. Step 3: Cross multiply
    121,876.27x = 168,197.85 × 68,166.28
  4. Step 4: Simplify right side
    121,876.27x = 11,465,421,738.50
  5. Step 5: Solve for x
    x = 11,465,421,738.50/121,876.27
  6. Step 6: Final answer
    x = 94,074.27

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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.