Home / 121,701.77-167,942.45-67,976.09

Finding the Fourth Proportional to 121,701.77, 167,942.45 and 67,976.09

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Solution

The fourth proportional to 121,701.77, 167,942.45 and 67,976.09 is: 93,803.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,701.77 : 167,942.45 = 67,976.09 : x
  2. Step 2: Convert to fraction form
    121,701.77/167,942.45 = 67,976.09/x
  3. Step 3: Cross multiply
    121,701.77x = 167,942.45 × 67,976.09
  4. Step 4: Simplify right side
    121,701.77x = 11,416,070,756.14
  5. Step 5: Solve for x
    x = 11,416,070,756.14/121,701.77
  6. Step 6: Final answer
    x = 93,803.65

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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.