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Finding the Fourth Proportional to 136,990.08, 205,372.80 and 52,732.80

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Solution

The fourth proportional to 136,990.08, 205,372.80 and 52,732.80 is: 79,055.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,990.08 : 205,372.80 = 52,732.80 : x
  2. Step 2: Convert to fraction form
    136,990.08/205,372.80 = 52,732.80/x
  3. Step 3: Cross multiply
    136,990.08x = 205,372.80 × 52,732.80
  4. Step 4: Simplify right side
    136,990.08x = 10,829,882,787.84
  5. Step 5: Solve for x
    x = 10,829,882,787.84/136,990.08
  6. Step 6: Final answer
    x = 79,055.96

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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.