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Finding the Fourth Proportional to 136,020.60, 203,933.70 and 61,079.40

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Solution

The fourth proportional to 136,020.60, 203,933.70 and 61,079.40 is: 91,575.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,020.60 : 203,933.70 = 61,079.40 : x
  2. Step 2: Convert to fraction form
    136,020.60/203,933.70 = 61,079.40/x
  3. Step 3: Cross multiply
    136,020.60x = 203,933.70 × 61,079.40
  4. Step 4: Simplify right side
    136,020.60x = 12,456,148,035.78
  5. Step 5: Solve for x
    x = 12,456,148,035.78/136,020.60
  6. Step 6: Final answer
    x = 91,575.45

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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.