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Finding the Fourth Proportional to 122,562.80, 183,887.40 and 118,242.80

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Solution

The fourth proportional to 122,562.80, 183,887.40 and 118,242.80 is: 177,405.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,562.80 : 183,887.40 = 118,242.80 : x
  2. Step 2: Convert to fraction form
    122,562.80/183,887.40 = 118,242.80/x
  3. Step 3: Cross multiply
    122,562.80x = 183,887.40 × 118,242.80
  4. Step 4: Simplify right side
    122,562.80x = 21,743,361,060.72
  5. Step 5: Solve for x
    x = 21,743,361,060.72/122,562.80
  6. Step 6: Final answer
    x = 177,405.88

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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.