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Finding the Fourth Proportional to 136,357.70, 204,548.07 and 42,890.18

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Solution

The fourth proportional to 136,357.70, 204,548.07 and 42,890.18 is: 64,338.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,357.70 : 204,548.07 = 42,890.18 : x
  2. Step 2: Convert to fraction form
    136,357.70/204,548.07 = 42,890.18/x
  3. Step 3: Cross multiply
    136,357.70x = 204,548.07 × 42,890.18
  4. Step 4: Simplify right side
    136,357.70x = 8,773,103,540.95
  5. Step 5: Solve for x
    x = 8,773,103,540.95/136,357.70
  6. Step 6: Final answer
    x = 64,338.89

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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.