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Finding the Fourth Proportional to 151,299.98, 208,762.33 and 87,633.98

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Solution

The fourth proportional to 151,299.98, 208,762.33 and 87,633.98 is: 120,916.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,299.98 : 208,762.33 = 87,633.98 : x
  2. Step 2: Convert to fraction form
    151,299.98/208,762.33 = 87,633.98/x
  3. Step 3: Cross multiply
    151,299.98x = 208,762.33 × 87,633.98
  4. Step 4: Simplify right side
    151,299.98x = 18,294,673,851.97
  5. Step 5: Solve for x
    x = 18,294,673,851.97/151,299.98
  6. Step 6: Final answer
    x = 120,916.56

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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.