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Finding the Fourth Proportional to 118,775.05, 177,914.68 and 71,239.39

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Solution

The fourth proportional to 118,775.05, 177,914.68 and 71,239.39 is: 106,710.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,775.05 : 177,914.68 = 71,239.39 : x
  2. Step 2: Convert to fraction form
    118,775.05/177,914.68 = 71,239.39/x
  3. Step 3: Cross multiply
    118,775.05x = 177,914.68 × 71,239.39
  4. Step 4: Simplify right side
    118,775.05x = 12,674,532,652.36
  5. Step 5: Solve for x
    x = 12,674,532,652.36/118,775.05
  6. Step 6: Final answer
    x = 106,710.40

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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.