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Finding the Fourth Proportional to 151,299.48, 208,761.64 and 87,633.48

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Solution

The fourth proportional to 151,299.48, 208,761.64 and 87,633.48 is: 120,915.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,299.48 : 208,761.64 = 87,633.48 : x
  2. Step 2: Convert to fraction form
    151,299.48/208,761.64 = 87,633.48/x
  3. Step 3: Cross multiply
    151,299.48x = 208,761.64 × 87,633.48
  4. Step 4: Simplify right side
    151,299.48x = 18,294,509,003.71
  5. Step 5: Solve for x
    x = 18,294,509,003.71/151,299.48
  6. Step 6: Final answer
    x = 120,915.87

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1.5x scale

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.