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Finding the Fourth Proportional to 118,773.55, 177,912.43 and 71,237.89

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Solution

The fourth proportional to 118,773.55, 177,912.43 and 71,237.89 is: 106,708.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,773.55 : 177,912.43 = 71,237.89 : x
  2. Step 2: Convert to fraction form
    118,773.55/177,912.43 = 71,237.89/x
  3. Step 3: Cross multiply
    118,773.55x = 177,912.43 × 71,237.89
  4. Step 4: Simplify right side
    118,773.55x = 12,674,105,495.10
  5. Step 5: Solve for x
    x = 12,674,105,495.10/118,773.55
  6. Step 6: Final answer
    x = 106,708.15

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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.