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Finding the Fourth Proportional to 201,136.76, 277,559.76 and 120,608.72

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Solution

The fourth proportional to 201,136.76, 277,559.76 and 120,608.72 is: 166,434.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,136.76 : 277,559.76 = 120,608.72 : x
  2. Step 2: Convert to fraction form
    201,136.76/277,559.76 = 120,608.72/x
  3. Step 3: Cross multiply
    201,136.76x = 277,559.76 × 120,608.72
  4. Step 4: Simplify right side
    201,136.76x = 33,476,127,377.11
  5. Step 5: Solve for x
    x = 33,476,127,377.11/201,136.76
  6. Step 6: Final answer
    x = 166,434.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.