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Finding the Fourth Proportional to 121,696.80, 167,941.58 and 67,981.82

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Solution

The fourth proportional to 121,696.80, 167,941.58 and 67,981.82 is: 93,814.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,696.80 : 167,941.58 = 67,981.82 : x
  2. Step 2: Convert to fraction form
    121,696.80/167,941.58 = 67,981.82/x
  3. Step 3: Cross multiply
    121,696.80x = 167,941.58 × 67,981.82
  4. Step 4: Simplify right side
    121,696.80x = 11,416,973,422.37
  5. Step 5: Solve for x
    x = 11,416,973,422.37/121,696.80
  6. Step 6: Final answer
    x = 93,814.90

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1.5x scale

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.