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Finding the Fourth Proportional to 206,963.70, 310,445.55 and 136,104.90

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Solution

The fourth proportional to 206,963.70, 310,445.55 and 136,104.90 is: 204,157.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,963.70 : 310,445.55 = 136,104.90 : x
  2. Step 2: Convert to fraction form
    206,963.70/310,445.55 = 136,104.90/x
  3. Step 3: Cross multiply
    206,963.70x = 310,445.55 × 136,104.90
  4. Step 4: Simplify right side
    206,963.70x = 42,253,160,538.20
  5. Step 5: Solve for x
    x = 42,253,160,538.20/206,963.70
  6. Step 6: Final answer
    x = 204,157.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.