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Finding the Fourth Proportional to 112,209.84, 154,828.34 and 66,892.09

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Solution

The fourth proportional to 112,209.84, 154,828.34 and 66,892.09 is: 92,298.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,209.84 : 154,828.34 = 66,892.09 : x
  2. Step 2: Convert to fraction form
    112,209.84/154,828.34 = 66,892.09/x
  3. Step 3: Cross multiply
    112,209.84x = 154,828.34 × 66,892.09
  4. Step 4: Simplify right side
    112,209.84x = 10,356,790,449.86
  5. Step 5: Solve for x
    x = 10,356,790,449.86/112,209.84
  6. Step 6: Final answer
    x = 92,298.42

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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.