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Finding the Fourth Proportional to 136,630.30, 204,945.45 and 43,123.90

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Solution

The fourth proportional to 136,630.30, 204,945.45 and 43,123.90 is: 64,685.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,630.30 : 204,945.45 = 43,123.90 : x
  2. Step 2: Convert to fraction form
    136,630.30/204,945.45 = 43,123.90/x
  3. Step 3: Cross multiply
    136,630.30x = 204,945.45 × 43,123.90
  4. Step 4: Simplify right side
    136,630.30x = 8,838,047,091.26
  5. Step 5: Solve for x
    x = 8,838,047,091.26/136,630.30
  6. Step 6: Final answer
    x = 64,685.85

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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.