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Finding the Fourth Proportional to 118,683.77, 177,902.63 and 74,208.39

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Solution

The fourth proportional to 118,683.77, 177,902.63 and 74,208.39 is: 111,235.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,683.77 : 177,902.63 = 74,208.39 : x
  2. Step 2: Convert to fraction form
    118,683.77/177,902.63 = 74,208.39/x
  3. Step 3: Cross multiply
    118,683.77x = 177,902.63 × 74,208.39
  4. Step 4: Simplify right side
    118,683.77x = 13,201,866,989.17
  5. Step 5: Solve for x
    x = 13,201,866,989.17/118,683.77
  6. Step 6: Final answer
    x = 111,235.66

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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.