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Finding the Fourth Proportional to 152,305.64, 228,535.26 and 85,819.88

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Solution

The fourth proportional to 152,305.64, 228,535.26 and 85,819.88 is: 128,773.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,305.64 : 228,535.26 = 85,819.88 : x
  2. Step 2: Convert to fraction form
    152,305.64/228,535.26 = 85,819.88/x
  3. Step 3: Cross multiply
    152,305.64x = 228,535.26 × 85,819.88
  4. Step 4: Simplify right side
    152,305.64x = 19,612,868,588.97
  5. Step 5: Solve for x
    x = 19,612,868,588.97/152,305.64
  6. Step 6: Final answer
    x = 128,773.09

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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.