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Finding the Fourth Proportional to 154,958.82, 213,850.17 and 121,366.50

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Solution

The fourth proportional to 154,958.82, 213,850.17 and 121,366.50 is: 167,491.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,958.82 : 213,850.17 = 121,366.50 : x
  2. Step 2: Convert to fraction form
    154,958.82/213,850.17 = 121,366.50/x
  3. Step 3: Cross multiply
    154,958.82x = 213,850.17 × 121,366.50
  4. Step 4: Simplify right side
    154,958.82x = 25,954,246,657.31
  5. Step 5: Solve for x
    x = 25,954,246,657.31/154,958.82
  6. Step 6: Final answer
    x = 167,491.25

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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.