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Finding the Fourth Proportional to 149,892.38, 206,863.28 and 85,364.34

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Solution

The fourth proportional to 149,892.38, 206,863.28 and 85,364.34 is: 117,809.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,892.38 : 206,863.28 = 85,364.34 : x
  2. Step 2: Convert to fraction form
    149,892.38/206,863.28 = 85,364.34/x
  3. Step 3: Cross multiply
    149,892.38x = 206,863.28 × 85,364.34
  4. Step 4: Simplify right side
    149,892.38x = 17,658,746,940.61
  5. Step 5: Solve for x
    x = 17,658,746,940.61/149,892.38
  6. Step 6: Final answer
    x = 117,809.51

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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.