Home / 122,543.70-183,815.55-80,553.30

Finding the Fourth Proportional to 122,543.70, 183,815.55 and 80,553.30

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Solution

The fourth proportional to 122,543.70, 183,815.55 and 80,553.30 is: 120,829.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,543.70 : 183,815.55 = 80,553.30 : x
  2. Step 2: Convert to fraction form
    122,543.70/183,815.55 = 80,553.30/x
  3. Step 3: Cross multiply
    122,543.70x = 183,815.55 × 80,553.30
  4. Step 4: Simplify right side
    122,543.70x = 14,806,949,143.82
  5. Step 5: Solve for x
    x = 14,806,949,143.82/122,543.70
  6. Step 6: Final answer
    x = 120,829.95

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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.