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Finding the Fourth Proportional to 122,733.52, 183,951.84 and 87,138.88

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Solution

The fourth proportional to 122,733.52, 183,951.84 and 87,138.88 is: 130,602.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,733.52 : 183,951.84 = 87,138.88 : x
  2. Step 2: Convert to fraction form
    122,733.52/183,951.84 = 87,138.88/x
  3. Step 3: Cross multiply
    122,733.52x = 183,951.84 × 87,138.88
  4. Step 4: Simplify right side
    122,733.52x = 16,029,357,311.54
  5. Step 5: Solve for x
    x = 16,029,357,311.54/122,733.52
  6. Step 6: Final answer
    x = 130,602.93

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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.